906580bad3
These builtins are already there in Clang, however current codegen may produce suboptimal results due to their complex behavior. Implement them as intrinsics to ensure expected instructions are emitted.
76 lines
2.1 KiB
LLVM
76 lines
2.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 3
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; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr8 | FileCheck %s
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; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64-ibm-aix -mcpu=pwr8 | FileCheck %s
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define i64 @rldimi1(i64 %a) {
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; CHECK-LABEL: rldimi1:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: rldimi 3, 3, 8, 0
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; CHECK-NEXT: blr
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entry:
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%x0 = shl i64 %a, 8
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%x1 = and i64 %a, 255
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%x2 = or i64 %x0, %x1
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ret i64 %x2
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}
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define i64 @rldimi2(i64 %a) {
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; CHECK-LABEL: rldimi2:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: mr 4, 3
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; CHECK-NEXT: rlwimi 4, 3, 8, 16, 23
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; CHECK-NEXT: rlwimi 4, 3, 16, 8, 15
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; CHECK-NEXT: rldimi 4, 3, 24, 0
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; CHECK-NEXT: mr 3, 4
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; CHECK-NEXT: blr
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entry:
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%x0 = shl i64 %a, 8
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%x1 = and i64 %a, 255
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%x2 = or i64 %x0, %x1
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%x3 = shl i64 %x2, 16
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%x4 = and i64 %x2, 65535
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%x5 = or i64 %x3, %x4
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ret i64 %x5
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}
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define i64 @rldimi3(i64 %a) {
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; CHECK-LABEL: rldimi3:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: rotldi 4, 3, 32
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; CHECK-NEXT: rlwimi 4, 3, 0, 24, 31
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; CHECK-NEXT: rlwimi 4, 3, 8, 16, 23
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; CHECK-NEXT: rlwimi 4, 3, 16, 8, 15
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; CHECK-NEXT: rlwimi 4, 3, 24, 0, 7
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; CHECK-NEXT: rldimi 4, 3, 40, 16
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; CHECK-NEXT: rldimi 4, 3, 48, 8
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; CHECK-NEXT: rldimi 4, 3, 56, 0
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; CHECK-NEXT: mr 3, 4
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; CHECK-NEXT: blr
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entry:
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%0 = shl i64 %a, 8
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%1 = and i64 %a, 255
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%2 = or i64 %0, %1
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%3 = shl i64 %2, 16
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%4 = and i64 %2, 65535
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%5 = or i64 %3, %4
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%6 = shl i64 %5, 32
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%7 = and i64 %5, 4294967295
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%8 = or i64 %6, %7
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ret i64 %8
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}
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define i64 @rldimi_intrinsic(i64 %a) {
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; CHECK-LABEL: rldimi_intrinsic:
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; CHECK: # %bb.0:
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; CHECK-NEXT: rldimi 3, 3, 8, 0
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; CHECK-NEXT: rldimi 3, 3, 16, 0
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; CHECK-NEXT: rldimi 3, 3, 32, 0
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; CHECK-NEXT: blr
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%r1 = call i64 @llvm.ppc.rldimi(i64 %a, i64 %a, i32 8, i64 -256)
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%r2 = call i64 @llvm.ppc.rldimi(i64 %r1, i64 %r1, i32 16, i64 -65536)
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%r3 = call i64 @llvm.ppc.rldimi(i64 %r2, i64 %r2, i32 32, i64 -4294967296)
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ret i64 %r3
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}
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declare i64 @llvm.ppc.rldimi(i64, i64, i32 immarg, i64 immarg)
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