f1d8345a2a
Currently we create register mappings for registers used only once in current
MBB. For registers with multiple uses, when all the uses are in the current MBB,
we can also create mappings for them similarly according to the last use.
For example
%reg101 = ...
= ... reg101
%reg103 = ADD %reg101, %reg102
We can create mapping between %reg101 and %reg103.
Differential Revision: https://reviews.llvm.org/D113193
547 lines
16 KiB
LLVM
547 lines
16 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefix=X64
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; RUN: llc < %s -mtriple=i686-unknown-unknown | FileCheck %s --check-prefix=X32
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; shift left
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define i32 @and_signbit_shl(i32 %x, i32* %dst) {
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; X64-LABEL: and_signbit_shl:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shll $8, %eax
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; X64-NEXT: andl $-16777216, %eax # imm = 0xFF000000
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; X64-NEXT: movl %eax, (%rsi)
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; X64-NEXT: retq
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;
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; X32-LABEL: and_signbit_shl:
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; X32: # %bb.0:
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; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X32-NEXT: movzbl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: shll $24, %eax
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; X32-NEXT: movl %eax, (%ecx)
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; X32-NEXT: retl
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%t0 = and i32 %x, 4294901760 ; 0xFFFF0000
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%r = shl i32 %t0, 8
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store i32 %r, i32* %dst
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ret i32 %r
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}
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define i32 @and_nosignbit_shl(i32 %x, i32* %dst) {
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; X64-LABEL: and_nosignbit_shl:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shll $8, %eax
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; X64-NEXT: andl $-16777216, %eax # imm = 0xFF000000
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; X64-NEXT: movl %eax, (%rsi)
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; X64-NEXT: retq
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;
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; X32-LABEL: and_nosignbit_shl:
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; X32: # %bb.0:
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; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X32-NEXT: movzbl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: shll $24, %eax
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; X32-NEXT: movl %eax, (%ecx)
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; X32-NEXT: retl
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%t0 = and i32 %x, 2147418112 ; 0x7FFF0000
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%r = shl i32 %t0, 8
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store i32 %r, i32* %dst
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ret i32 %r
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}
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define i32 @or_signbit_shl(i32 %x, i32* %dst) {
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; X64-LABEL: or_signbit_shl:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shll $8, %eax
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; X64-NEXT: orl $-16777216, %eax # imm = 0xFF000000
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; X64-NEXT: movl %eax, (%rsi)
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; X64-NEXT: retq
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;
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; X32-LABEL: or_signbit_shl:
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; X32: # %bb.0:
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; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: shll $8, %eax
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; X32-NEXT: orl $-16777216, %eax # imm = 0xFF000000
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; X32-NEXT: movl %eax, (%ecx)
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; X32-NEXT: retl
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%t0 = or i32 %x, 4294901760 ; 0xFFFF0000
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%r = shl i32 %t0, 8
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store i32 %r, i32* %dst
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ret i32 %r
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}
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define i32 @or_nosignbit_shl(i32 %x, i32* %dst) {
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; X64-LABEL: or_nosignbit_shl:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shll $8, %eax
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; X64-NEXT: orl $-16777216, %eax # imm = 0xFF000000
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; X64-NEXT: movl %eax, (%rsi)
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; X64-NEXT: retq
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;
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; X32-LABEL: or_nosignbit_shl:
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; X32: # %bb.0:
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; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: shll $8, %eax
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; X32-NEXT: orl $-16777216, %eax # imm = 0xFF000000
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; X32-NEXT: movl %eax, (%ecx)
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; X32-NEXT: retl
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%t0 = or i32 %x, 2147418112 ; 0x7FFF0000
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%r = shl i32 %t0, 8
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store i32 %r, i32* %dst
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ret i32 %r
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}
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define i32 @xor_signbit_shl(i32 %x, i32* %dst) {
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; X64-LABEL: xor_signbit_shl:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shll $8, %eax
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; X64-NEXT: xorl $-16777216, %eax # imm = 0xFF000000
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; X64-NEXT: movl %eax, (%rsi)
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; X64-NEXT: retq
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;
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; X32-LABEL: xor_signbit_shl:
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; X32: # %bb.0:
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; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X32-NEXT: movl $16711680, %eax # imm = 0xFF0000
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; X32-NEXT: xorl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: shll $8, %eax
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; X32-NEXT: movl %eax, (%ecx)
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; X32-NEXT: retl
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%t0 = xor i32 %x, 4294901760 ; 0xFFFF0000
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%r = shl i32 %t0, 8
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store i32 %r, i32* %dst
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ret i32 %r
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}
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define i32 @xor_nosignbit_shl(i32 %x, i32* %dst) {
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; X64-LABEL: xor_nosignbit_shl:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shll $8, %eax
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; X64-NEXT: xorl $-16777216, %eax # imm = 0xFF000000
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; X64-NEXT: movl %eax, (%rsi)
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; X64-NEXT: retq
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;
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; X32-LABEL: xor_nosignbit_shl:
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; X32: # %bb.0:
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; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X32-NEXT: movl $16711680, %eax # imm = 0xFF0000
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; X32-NEXT: xorl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: shll $8, %eax
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; X32-NEXT: movl %eax, (%ecx)
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; X32-NEXT: retl
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%t0 = xor i32 %x, 2147418112 ; 0x7FFF0000
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%r = shl i32 %t0, 8
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store i32 %r, i32* %dst
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ret i32 %r
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}
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define i32 @add_signbit_shl(i32 %x, i32* %dst) {
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; X64-LABEL: add_signbit_shl:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: shll $8, %edi
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; X64-NEXT: leal -16777216(%rdi), %eax
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; X64-NEXT: movl %eax, (%rsi)
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; X64-NEXT: retq
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;
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; X32-LABEL: add_signbit_shl:
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; X32: # %bb.0:
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; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: shll $8, %eax
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; X32-NEXT: addl $-16777216, %eax # imm = 0xFF000000
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; X32-NEXT: movl %eax, (%ecx)
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; X32-NEXT: retl
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%t0 = add i32 %x, 4294901760 ; 0xFFFF0000
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%r = shl i32 %t0, 8
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store i32 %r, i32* %dst
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ret i32 %r
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}
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define i32 @add_nosignbit_shl(i32 %x, i32* %dst) {
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; X64-LABEL: add_nosignbit_shl:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: shll $8, %edi
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; X64-NEXT: leal -16777216(%rdi), %eax
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; X64-NEXT: movl %eax, (%rsi)
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; X64-NEXT: retq
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;
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; X32-LABEL: add_nosignbit_shl:
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; X32: # %bb.0:
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; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: shll $8, %eax
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; X32-NEXT: addl $-16777216, %eax # imm = 0xFF000000
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; X32-NEXT: movl %eax, (%ecx)
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; X32-NEXT: retl
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%t0 = add i32 %x, 2147418112 ; 0x7FFF0000
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%r = shl i32 %t0, 8
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store i32 %r, i32* %dst
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ret i32 %r
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}
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; logical shift right
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define i32 @and_signbit_lshr(i32 %x, i32* %dst) {
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; X64-LABEL: and_signbit_lshr:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shrl $8, %eax
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; X64-NEXT: andl $16776960, %eax # imm = 0xFFFF00
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; X64-NEXT: movl %eax, (%rsi)
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; X64-NEXT: retq
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;
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; X32-LABEL: and_signbit_lshr:
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; X32: # %bb.0:
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; X32-NEXT: movzwl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: shll $16, %eax
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; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X32-NEXT: shrl $8, %eax
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; X32-NEXT: movl %eax, (%ecx)
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; X32-NEXT: retl
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%t0 = and i32 %x, 4294901760 ; 0xFFFF0000
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%r = lshr i32 %t0, 8
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store i32 %r, i32* %dst
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ret i32 %r
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}
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define i32 @and_nosignbit_lshr(i32 %x, i32* %dst) {
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; X64-LABEL: and_nosignbit_lshr:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shrl $8, %eax
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; X64-NEXT: andl $8388352, %eax # imm = 0x7FFF00
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; X64-NEXT: movl %eax, (%rsi)
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; X64-NEXT: retq
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;
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; X32-LABEL: and_nosignbit_lshr:
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; X32: # %bb.0:
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; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X32-NEXT: movl $2147418112, %eax # imm = 0x7FFF0000
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; X32-NEXT: andl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: shrl $8, %eax
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; X32-NEXT: movl %eax, (%ecx)
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; X32-NEXT: retl
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%t0 = and i32 %x, 2147418112 ; 0x7FFF0000
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%r = lshr i32 %t0, 8
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store i32 %r, i32* %dst
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ret i32 %r
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}
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define i32 @or_signbit_lshr(i32 %x, i32* %dst) {
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; X64-LABEL: or_signbit_lshr:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shrl $8, %eax
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; X64-NEXT: orl $16776960, %eax # imm = 0xFFFF00
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; X64-NEXT: movl %eax, (%rsi)
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; X64-NEXT: retq
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;
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; X32-LABEL: or_signbit_lshr:
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; X32: # %bb.0:
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; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X32-NEXT: movl $-65536, %eax # imm = 0xFFFF0000
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; X32-NEXT: orl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: shrl $8, %eax
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; X32-NEXT: movl %eax, (%ecx)
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; X32-NEXT: retl
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%t0 = or i32 %x, 4294901760 ; 0xFFFF0000
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%r = lshr i32 %t0, 8
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store i32 %r, i32* %dst
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ret i32 %r
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}
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define i32 @or_nosignbit_lshr(i32 %x, i32* %dst) {
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; X64-LABEL: or_nosignbit_lshr:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shrl $8, %eax
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; X64-NEXT: orl $8388352, %eax # imm = 0x7FFF00
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; X64-NEXT: movl %eax, (%rsi)
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; X64-NEXT: retq
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;
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; X32-LABEL: or_nosignbit_lshr:
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; X32: # %bb.0:
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; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X32-NEXT: movl $2147418112, %eax # imm = 0x7FFF0000
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; X32-NEXT: orl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: shrl $8, %eax
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; X32-NEXT: movl %eax, (%ecx)
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; X32-NEXT: retl
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%t0 = or i32 %x, 2147418112 ; 0x7FFF0000
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%r = lshr i32 %t0, 8
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store i32 %r, i32* %dst
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ret i32 %r
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}
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define i32 @xor_signbit_lshr(i32 %x, i32* %dst) {
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; X64-LABEL: xor_signbit_lshr:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shrl $8, %eax
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; X64-NEXT: xorl $16776960, %eax # imm = 0xFFFF00
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; X64-NEXT: movl %eax, (%rsi)
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; X64-NEXT: retq
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;
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; X32-LABEL: xor_signbit_lshr:
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; X32: # %bb.0:
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; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X32-NEXT: movl $-65536, %eax # imm = 0xFFFF0000
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; X32-NEXT: xorl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: shrl $8, %eax
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; X32-NEXT: movl %eax, (%ecx)
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; X32-NEXT: retl
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%t0 = xor i32 %x, 4294901760 ; 0xFFFF0000
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%r = lshr i32 %t0, 8
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store i32 %r, i32* %dst
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ret i32 %r
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}
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define i32 @xor_nosignbit_lshr(i32 %x, i32* %dst) {
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; X64-LABEL: xor_nosignbit_lshr:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shrl $8, %eax
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; X64-NEXT: xorl $8388352, %eax # imm = 0x7FFF00
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; X64-NEXT: movl %eax, (%rsi)
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; X64-NEXT: retq
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;
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; X32-LABEL: xor_nosignbit_lshr:
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; X32: # %bb.0:
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; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X32-NEXT: movl $2147418112, %eax # imm = 0x7FFF0000
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; X32-NEXT: xorl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: shrl $8, %eax
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; X32-NEXT: movl %eax, (%ecx)
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; X32-NEXT: retl
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%t0 = xor i32 %x, 2147418112 ; 0x7FFF0000
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%r = lshr i32 %t0, 8
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store i32 %r, i32* %dst
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ret i32 %r
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}
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define i32 @add_signbit_lshr(i32 %x, i32* %dst) {
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; X64-LABEL: add_signbit_lshr:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal -65536(%rdi), %eax
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; X64-NEXT: shrl $8, %eax
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; X64-NEXT: movl %eax, (%rsi)
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; X64-NEXT: retq
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;
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; X32-LABEL: add_signbit_lshr:
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; X32: # %bb.0:
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; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X32-NEXT: movl $-65536, %eax # imm = 0xFFFF0000
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; X32-NEXT: addl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: shrl $8, %eax
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; X32-NEXT: movl %eax, (%ecx)
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; X32-NEXT: retl
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%t0 = add i32 %x, 4294901760 ; 0xFFFF0000
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%r = lshr i32 %t0, 8
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store i32 %r, i32* %dst
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ret i32 %r
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}
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define i32 @add_nosignbit_lshr(i32 %x, i32* %dst) {
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; X64-LABEL: add_nosignbit_lshr:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal 2147418112(%rdi), %eax
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; X64-NEXT: shrl $8, %eax
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; X64-NEXT: movl %eax, (%rsi)
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; X64-NEXT: retq
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;
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; X32-LABEL: add_nosignbit_lshr:
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; X32: # %bb.0:
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; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X32-NEXT: movl $2147418112, %eax # imm = 0x7FFF0000
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; X32-NEXT: addl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: shrl $8, %eax
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; X32-NEXT: movl %eax, (%ecx)
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; X32-NEXT: retl
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%t0 = add i32 %x, 2147418112 ; 0x7FFF0000
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%r = lshr i32 %t0, 8
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store i32 %r, i32* %dst
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ret i32 %r
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}
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; arithmetic shift right
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define i32 @and_signbit_ashr(i32 %x, i32* %dst) {
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; X64-LABEL: and_signbit_ashr:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: sarl $8, %eax
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; X64-NEXT: andl $-256, %eax
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; X64-NEXT: movl %eax, (%rsi)
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; X64-NEXT: retq
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;
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; X32-LABEL: and_signbit_ashr:
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; X32: # %bb.0:
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; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X32-NEXT: movswl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: shll $8, %eax
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; X32-NEXT: movl %eax, (%ecx)
|
|
; X32-NEXT: retl
|
|
%t0 = and i32 %x, 4294901760 ; 0xFFFF0000
|
|
%r = ashr i32 %t0, 8
|
|
store i32 %r, i32* %dst
|
|
ret i32 %r
|
|
}
|
|
define i32 @and_nosignbit_ashr(i32 %x, i32* %dst) {
|
|
; X64-LABEL: and_nosignbit_ashr:
|
|
; X64: # %bb.0:
|
|
; X64-NEXT: movl %edi, %eax
|
|
; X64-NEXT: shrl $8, %eax
|
|
; X64-NEXT: andl $8388352, %eax # imm = 0x7FFF00
|
|
; X64-NEXT: movl %eax, (%rsi)
|
|
; X64-NEXT: retq
|
|
;
|
|
; X32-LABEL: and_nosignbit_ashr:
|
|
; X32: # %bb.0:
|
|
; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
|
|
; X32-NEXT: movl $2147418112, %eax # imm = 0x7FFF0000
|
|
; X32-NEXT: andl {{[0-9]+}}(%esp), %eax
|
|
; X32-NEXT: shrl $8, %eax
|
|
; X32-NEXT: movl %eax, (%ecx)
|
|
; X32-NEXT: retl
|
|
%t0 = and i32 %x, 2147418112 ; 0x7FFF0000
|
|
%r = ashr i32 %t0, 8
|
|
store i32 %r, i32* %dst
|
|
ret i32 %r
|
|
}
|
|
|
|
define i32 @or_signbit_ashr(i32 %x, i32* %dst) {
|
|
; X64-LABEL: or_signbit_ashr:
|
|
; X64: # %bb.0:
|
|
; X64-NEXT: movl %edi, %eax
|
|
; X64-NEXT: shrl $8, %eax
|
|
; X64-NEXT: orl $-256, %eax
|
|
; X64-NEXT: movl %eax, (%rsi)
|
|
; X64-NEXT: retq
|
|
;
|
|
; X32-LABEL: or_signbit_ashr:
|
|
; X32: # %bb.0:
|
|
; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
|
|
; X32-NEXT: movl $-65536, %eax # imm = 0xFFFF0000
|
|
; X32-NEXT: orl {{[0-9]+}}(%esp), %eax
|
|
; X32-NEXT: sarl $8, %eax
|
|
; X32-NEXT: movl %eax, (%ecx)
|
|
; X32-NEXT: retl
|
|
%t0 = or i32 %x, 4294901760 ; 0xFFFF0000
|
|
%r = ashr i32 %t0, 8
|
|
store i32 %r, i32* %dst
|
|
ret i32 %r
|
|
}
|
|
define i32 @or_nosignbit_ashr(i32 %x, i32* %dst) {
|
|
; X64-LABEL: or_nosignbit_ashr:
|
|
; X64: # %bb.0:
|
|
; X64-NEXT: movl %edi, %eax
|
|
; X64-NEXT: sarl $8, %eax
|
|
; X64-NEXT: orl $8388352, %eax # imm = 0x7FFF00
|
|
; X64-NEXT: movl %eax, (%rsi)
|
|
; X64-NEXT: retq
|
|
;
|
|
; X32-LABEL: or_nosignbit_ashr:
|
|
; X32: # %bb.0:
|
|
; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
|
|
; X32-NEXT: movl $2147418112, %eax # imm = 0x7FFF0000
|
|
; X32-NEXT: orl {{[0-9]+}}(%esp), %eax
|
|
; X32-NEXT: sarl $8, %eax
|
|
; X32-NEXT: movl %eax, (%ecx)
|
|
; X32-NEXT: retl
|
|
%t0 = or i32 %x, 2147418112 ; 0x7FFF0000
|
|
%r = ashr i32 %t0, 8
|
|
store i32 %r, i32* %dst
|
|
ret i32 %r
|
|
}
|
|
|
|
define i32 @xor_signbit_ashr(i32 %x, i32* %dst) {
|
|
; X64-LABEL: xor_signbit_ashr:
|
|
; X64: # %bb.0:
|
|
; X64-NEXT: movl %edi, %eax
|
|
; X64-NEXT: sarl $8, %eax
|
|
; X64-NEXT: xorl $-256, %eax
|
|
; X64-NEXT: movl %eax, (%rsi)
|
|
; X64-NEXT: retq
|
|
;
|
|
; X32-LABEL: xor_signbit_ashr:
|
|
; X32: # %bb.0:
|
|
; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
|
|
; X32-NEXT: movl $-65536, %eax # imm = 0xFFFF0000
|
|
; X32-NEXT: xorl {{[0-9]+}}(%esp), %eax
|
|
; X32-NEXT: sarl $8, %eax
|
|
; X32-NEXT: movl %eax, (%ecx)
|
|
; X32-NEXT: retl
|
|
%t0 = xor i32 %x, 4294901760 ; 0xFFFF0000
|
|
%r = ashr i32 %t0, 8
|
|
store i32 %r, i32* %dst
|
|
ret i32 %r
|
|
}
|
|
define i32 @xor_nosignbit_ashr(i32 %x, i32* %dst) {
|
|
; X64-LABEL: xor_nosignbit_ashr:
|
|
; X64: # %bb.0:
|
|
; X64-NEXT: movl %edi, %eax
|
|
; X64-NEXT: sarl $8, %eax
|
|
; X64-NEXT: xorl $8388352, %eax # imm = 0x7FFF00
|
|
; X64-NEXT: movl %eax, (%rsi)
|
|
; X64-NEXT: retq
|
|
;
|
|
; X32-LABEL: xor_nosignbit_ashr:
|
|
; X32: # %bb.0:
|
|
; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
|
|
; X32-NEXT: movl $2147418112, %eax # imm = 0x7FFF0000
|
|
; X32-NEXT: xorl {{[0-9]+}}(%esp), %eax
|
|
; X32-NEXT: sarl $8, %eax
|
|
; X32-NEXT: movl %eax, (%ecx)
|
|
; X32-NEXT: retl
|
|
%t0 = xor i32 %x, 2147418112 ; 0x7FFF0000
|
|
%r = ashr i32 %t0, 8
|
|
store i32 %r, i32* %dst
|
|
ret i32 %r
|
|
}
|
|
|
|
define i32 @add_signbit_ashr(i32 %x, i32* %dst) {
|
|
; X64-LABEL: add_signbit_ashr:
|
|
; X64: # %bb.0:
|
|
; X64-NEXT: # kill: def $edi killed $edi def $rdi
|
|
; X64-NEXT: leal -65536(%rdi), %eax
|
|
; X64-NEXT: sarl $8, %eax
|
|
; X64-NEXT: movl %eax, (%rsi)
|
|
; X64-NEXT: retq
|
|
;
|
|
; X32-LABEL: add_signbit_ashr:
|
|
; X32: # %bb.0:
|
|
; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
|
|
; X32-NEXT: movl $-65536, %eax # imm = 0xFFFF0000
|
|
; X32-NEXT: addl {{[0-9]+}}(%esp), %eax
|
|
; X32-NEXT: sarl $8, %eax
|
|
; X32-NEXT: movl %eax, (%ecx)
|
|
; X32-NEXT: retl
|
|
%t0 = add i32 %x, 4294901760 ; 0xFFFF0000
|
|
%r = ashr i32 %t0, 8
|
|
store i32 %r, i32* %dst
|
|
ret i32 %r
|
|
}
|
|
define i32 @add_nosignbit_ashr(i32 %x, i32* %dst) {
|
|
; X64-LABEL: add_nosignbit_ashr:
|
|
; X64: # %bb.0:
|
|
; X64-NEXT: # kill: def $edi killed $edi def $rdi
|
|
; X64-NEXT: leal 2147418112(%rdi), %eax
|
|
; X64-NEXT: sarl $8, %eax
|
|
; X64-NEXT: movl %eax, (%rsi)
|
|
; X64-NEXT: retq
|
|
;
|
|
; X32-LABEL: add_nosignbit_ashr:
|
|
; X32: # %bb.0:
|
|
; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
|
|
; X32-NEXT: movl $2147418112, %eax # imm = 0x7FFF0000
|
|
; X32-NEXT: addl {{[0-9]+}}(%esp), %eax
|
|
; X32-NEXT: sarl $8, %eax
|
|
; X32-NEXT: movl %eax, (%ecx)
|
|
; X32-NEXT: retl
|
|
%t0 = add i32 %x, 2147418112 ; 0x7FFF0000
|
|
%r = ashr i32 %t0, 8
|
|
store i32 %r, i32* %dst
|
|
ret i32 %r
|
|
}
|