9ca9fee6e8
Return false from ShouldShrinkFPConstant(), so that these constants are stored in their full size on the constant pool, even if they could have been shrunk and used with an extending load. This is better since LD is faster than LDE, and it also enables reg/mem opcodes. Review: Ulrich Weigand Differential Revision: https://reviews.llvm.org/D117927
92 lines
3.0 KiB
LLVM
92 lines
3.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; Test strict conversion of floating-point values to unsigned i32s (z10 only).
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
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; z10 doesn't have native support for unsigned fp-to-i32 conversions;
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; they were added in z196 as the Convert to Logical family of instructions.
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; Promoting to i64 doesn't generate an inexact condition for values that are
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; outside the i32 range but in the i64 range, so use the default expansion.
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; Note that the strict expansion sequence must be used.
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declare i32 @llvm.experimental.constrained.fptoui.i32.f32(float, metadata)
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declare i32 @llvm.experimental.constrained.fptoui.i32.f64(double, metadata)
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declare i32 @llvm.experimental.constrained.fptoui.i32.f128(fp128, metadata)
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; Test f32->i32.
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define i32 @f1(float %f) #0 {
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; CHECK-LABEL: f1:
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; CHECK: # %bb.0:
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; CHECK-NEXT: larl %r1, .LCPI0_0
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; CHECK-NEXT: le %f1, 0(%r1)
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; CHECK-NEXT: kebr %f0, %f1
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; CHECK-NEXT: jnl .LBB0_2
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; CHECK-NEXT: # %bb.1:
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; CHECK-NEXT: lhi %r0, 0
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; CHECK-NEXT: lzer %f1
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; CHECK-NEXT: j .LBB0_3
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; CHECK-NEXT: .LBB0_2:
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; CHECK-NEXT: llilh %r0, 32768
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; CHECK-NEXT: .LBB0_3:
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; CHECK-NEXT: sebr %f0, %f1
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; CHECK-NEXT: cfebr %r2, 5, %f0
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; CHECK-NEXT: xr %r2, %r0
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; CHECK-NEXT: br %r14
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%conv = call i32 @llvm.experimental.constrained.fptoui.i32.f32(float %f,
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metadata !"fpexcept.strict") #0
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ret i32 %conv
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}
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; Test f64->i32.
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define i32 @f2(double %f) #0 {
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; CHECK-LABEL: f2:
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; CHECK: # %bb.0:
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; CHECK-NEXT: larl %r1, .LCPI1_0
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; CHECK-NEXT: ld %f1, 0(%r1)
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; CHECK-NEXT: kdbr %f0, %f1
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; CHECK-NEXT: jnl .LBB1_2
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; CHECK-NEXT: # %bb.1:
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; CHECK-NEXT: lhi %r0, 0
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; CHECK-NEXT: lzdr %f1
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; CHECK-NEXT: j .LBB1_3
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; CHECK-NEXT: .LBB1_2:
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; CHECK-NEXT: llilh %r0, 32768
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; CHECK-NEXT: .LBB1_3:
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; CHECK-NEXT: sdbr %f0, %f1
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; CHECK-NEXT: cfdbr %r2, 5, %f0
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; CHECK-NEXT: xr %r2, %r0
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; CHECK-NEXT: br %r14
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%conv = call i32 @llvm.experimental.constrained.fptoui.i32.f64(double %f,
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metadata !"fpexcept.strict") #0
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ret i32 %conv
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}
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; Test f128->i32.
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define i32 @f3(fp128 *%src) #0 {
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; CHECK-LABEL: f3:
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; CHECK: # %bb.0:
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; CHECK-NEXT: ld %f0, 0(%r2)
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; CHECK-NEXT: ld %f2, 8(%r2)
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; CHECK-NEXT: larl %r1, .LCPI2_0
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; CHECK-NEXT: lxeb %f1, 0(%r1)
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; CHECK-NEXT: kxbr %f0, %f1
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; CHECK-NEXT: jnl .LBB2_2
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; CHECK-NEXT: # %bb.1:
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; CHECK-NEXT: lhi %r0, 0
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; CHECK-NEXT: lzxr %f1
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; CHECK-NEXT: j .LBB2_3
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; CHECK-NEXT: .LBB2_2:
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; CHECK-NEXT: llilh %r0, 32768
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; CHECK-NEXT: .LBB2_3:
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; CHECK-NEXT: sxbr %f0, %f1
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; CHECK-NEXT: cfxbr %r2, 5, %f0
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; CHECK-NEXT: xr %r2, %r0
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; CHECK-NEXT: br %r14
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%f = load fp128, fp128 *%src
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%conv = call i32 @llvm.experimental.constrained.fptoui.i32.f128(fp128 %f,
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metadata !"fpexcept.strict") #0
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ret i32 %conv
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}
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attributes #0 = { strictfp }
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