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
91 lines
2.9 KiB
LLVM
91 lines
2.9 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 i64s (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-i64 conversions;
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; they were added in z196 as the Convert to Logical family of instructions.
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; Convert via signed i64s instead.
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; Note that the strict expansion sequence must be used.
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declare i64 @llvm.experimental.constrained.fptoui.i64.f32(float, metadata)
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declare i64 @llvm.experimental.constrained.fptoui.i64.f64(double, metadata)
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declare i64 @llvm.experimental.constrained.fptoui.i64.f128(fp128, metadata)
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; Test f32->i64.
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define i64 @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: lghi %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: llihh %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: cgebr %r2, 5, %f0
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; CHECK-NEXT: xgr %r2, %r0
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; CHECK-NEXT: br %r14
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%conv = call i64 @llvm.experimental.constrained.fptoui.i64.f32(float %f,
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metadata !"fpexcept.strict") #0
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ret i64 %conv
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}
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; Test f64->i64.
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define i64 @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: lghi %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: llihh %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: cgdbr %r2, 5, %f0
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; CHECK-NEXT: xgr %r2, %r0
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; CHECK-NEXT: br %r14
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%conv = call i64 @llvm.experimental.constrained.fptoui.i64.f64(double %f,
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metadata !"fpexcept.strict") #0
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ret i64 %conv
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}
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; Test f128->i64.
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define i64 @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: lghi %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: llihh %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: cgxbr %r2, 5, %f0
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; CHECK-NEXT: xgr %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 i64 @llvm.experimental.constrained.fptoui.i64.f128(fp128 %f,
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metadata !"fpexcept.strict") #0
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ret i64 %conv
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}
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attributes #0 = { strictfp }
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