8f48ba993b
This patch adds MXCSR as a reserved physical register and models its use by X86 SSE instructions. It also adds flag "mayRaiseFPException" for the instructions that possibly can raise FP exception according to the architecture definition. Following what SystemZ and other targets does, only the current rounding modes and the IEEE exception masks are modeled. *Changes* of the MXCSR due to exceptions are not modeled. Patch by Pengfei Wang Differential Revision: https://reviews.llvm.org/D68121
146 lines
4.5 KiB
YAML
146 lines
4.5 KiB
YAML
# RUN: llc -march=x86-64 -run-pass none -o - %s | FileCheck %s
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# This test ensures that the MIR parser parses constant pool constants and
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# constant pool operands correctly.
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--- |
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define double @test(double %a, float %b) {
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entry:
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%c = fadd double %a, 3.250000e+00
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%d = fadd float %b, 6.250000e+00
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%e = fpext float %d to double
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%f = fmul double %c, %e
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ret double %f
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}
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define double @test2(double %a, float %b) {
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entry:
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%c = fadd double %a, 3.250000e+00
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%d = fadd float %b, 6.250000e+00
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%e = fpext float %d to double
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%f = fmul double %c, %e
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ret double %f
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}
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define double @test3(double %a, float %b) {
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entry:
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%c = fadd double %a, 3.250000e+00
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%d = fadd float %b, 6.250000e+00
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%e = fpext float %d to double
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%f = fmul double %c, %e
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ret double %f
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}
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define double @test4(double %a, float %b) {
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entry:
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%c = fadd double %a, 3.250000e+00
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%d = fadd float %b, 6.250000e+00
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%e = fpext float %d to double
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%f = fmul double %c, %e
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ret double %f
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}
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...
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---
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# CHECK: name: test
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# CHECK: constants:
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# CHECK-NEXT: - id: 0
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# CHECK-NEXT: value: 'double 3.250000e+00'
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# CHECK-NEXT: alignment: 8
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# CHECK-NEXT: isTargetSpecific: false
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# CHECK-NEXT: - id: 1
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# CHECK-NEXT: value: 'float 6.250000e+00'
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# CHECK-NEXT: alignment: 4
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# CHECK-NEXT: isTargetSpecific: false
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name: test
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constants:
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- id: 0
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value: 'double 3.250000e+00'
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alignment: 8
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- id: 1
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value: 'float 6.250000e+00'
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alignment: 4
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body: |
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bb.0.entry:
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; CHECK: $xmm0 = ADDSDrm killed $xmm0, $rip, 1, $noreg, %const.0, $noreg, implicit $mxcsr
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; CHECK-NEXT: $xmm1 = ADDSSrm killed $xmm1, $rip, 1, $noreg, %const.1, $noreg, implicit $mxcsr
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$xmm0 = ADDSDrm killed $xmm0, $rip, 1, _, %const.0, _, implicit $mxcsr
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$xmm1 = ADDSSrm killed $xmm1, $rip, 1, _, %const.1, _, implicit $mxcsr
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$xmm1 = CVTSS2SDrr killed $xmm1, implicit $mxcsr
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$xmm0 = MULSDrr killed $xmm0, killed $xmm1, implicit $mxcsr
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RETQ $xmm0
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...
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---
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# Verify that alignment can be inferred:
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# CHECK: name: test2
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# CHECK: constants:
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# CHECK-NEXT: - id: 0
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# CHECK-NEXT: value: 'double 3.250000e+00'
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# CHECK-NEXT: alignment: 8
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# CHECK-NEXT: isTargetSpecific: false
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# CHECK-NEXT: - id: 1
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# CHECK-NEXT: value: 'float 6.250000e+00'
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# CHECK-NEXT: alignment: 4
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# CHECK-NEXT: isTargetSpecific: false
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name: test2
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constants:
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- id: 0
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value: 'double 3.250000e+00'
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- id: 1
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value: 'float 6.250000e+00'
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body: |
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bb.0.entry:
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$xmm0 = ADDSDrm killed $xmm0, $rip, 1, _, %const.0, _, implicit $mxcsr
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$xmm1 = ADDSSrm killed $xmm1, $rip, 1, _, %const.1, _, implicit $mxcsr
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$xmm1 = CVTSS2SDrr killed $xmm1, implicit $mxcsr
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$xmm0 = MULSDrr killed $xmm0, killed $xmm1, implicit $mxcsr
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RETQ $xmm0
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...
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---
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# Verify that the non-standard alignments are respected:
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# CHECK: name: test3
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# CHECK: constants:
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# CHECK-NEXT: - id: 0
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# CHECK-NEXT: value: 'double 3.250000e+00'
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# CHECK-NEXT: alignment: 128
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# CHECK-NEXT: isTargetSpecific: false
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# CHECK-NEXT: - id: 1
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# CHECK-NEXT: value: 'float 6.250000e+00'
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# CHECK-NEXT: alignment: 1
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# CHECK-NEXT: isTargetSpecific: false
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name: test3
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constants:
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- id: 0
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value: 'double 3.250000e+00'
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alignment: 128
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- id: 1
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value: 'float 6.250000e+00'
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alignment: 1
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body: |
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bb.0.entry:
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; CHECK: $xmm0 = ADDSDrm killed $xmm0, $rip, 1, $noreg, %const.0, $noreg, implicit $mxcsr
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; CHECK-NEXT: $xmm1 = ADDSSrm killed $xmm1, $rip, 1, $noreg, %const.1, $noreg, implicit $mxcsr
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$xmm0 = ADDSDrm killed $xmm0, $rip, 1, _, %const.0, _, implicit $mxcsr
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$xmm1 = ADDSSrm killed $xmm1, $rip, 1, _, %const.1, _, implicit $mxcsr
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$xmm1 = CVTSS2SDrr killed $xmm1, implicit $mxcsr
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$xmm0 = MULSDrr killed $xmm0, killed $xmm1, implicit $mxcsr
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RETQ $xmm0
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...
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---
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# CHECK: name: test4
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name: test4
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constants:
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- id: 0
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value: 'double 3.250000e+00'
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- id: 1
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value: 'float 6.250000e+00'
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body: |
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bb.0.entry:
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; CHECK: $xmm0 = ADDSDrm killed $xmm0, $rip, 1, $noreg, %const.1 - 12, $noreg, implicit $mxcsr
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; CHECK-NEXT: $xmm1 = ADDSSrm killed $xmm1, $rip, 1, $noreg, %const.0 + 8, $noreg, implicit $mxcsr
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$xmm0 = ADDSDrm killed $xmm0, $rip, 1, _, %const.1 - 12, _, implicit $mxcsr
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$xmm1 = ADDSSrm killed $xmm1, $rip, 1, _, %const.0 + 8, _, implicit $mxcsr
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$xmm1 = CVTSS2SDrr killed $xmm1, implicit $mxcsr
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$xmm0 = MULSDrr killed $xmm0, killed $xmm1, implicit $mxcsr
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RETQ $xmm0
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...
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