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c281a5da15
SSE min and max instructions. The real thing this code needs to be concerned about is negative zero. Update the sse-minmax.ll test accordingly, and add tests for -enable-unsafe-fp-math mode as well. llvm-svn: 96775
517 lines
14 KiB
LLVM
517 lines
14 KiB
LLVM
; RUN: llc < %s -march=x86-64 -asm-verbose=false | FileCheck %s
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; RUN: llc < %s -march=x86-64 -asm-verbose=false -enable-unsafe-fp-math | FileCheck -check-prefix=uNSAFE %s
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; Some of these patterns can be matched as SSE min or max. Some of
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; then can be matched provided that the operands are swapped.
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; Some of them can't be matched at all and require a comparison
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; and a conditional branch.
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; The naming convention is {,x_}{o,u}{gt,lt,ge,le}{,_inverse}
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; x_ : use 0.0 instead of %y
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; _inverse : swap the arms of the select.
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; CHECK: ogt:
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; CHECK-NEXT: maxsd %xmm1, %xmm0
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; CHECK-NEXT: ret
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; uNSAFE: ogt:
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; uNSAFE-NEXT: maxsd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @ogt(double %x, double %y) nounwind {
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%c = fcmp ogt double %x, %y
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%d = select i1 %c, double %x, double %y
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ret double %d
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}
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; CHECK: olt:
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; CHECK-NEXT: minsd %xmm1, %xmm0
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; CHECK-NEXT: ret
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; uNSAFE: olt:
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; uNSAFE-NEXT: minsd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @olt(double %x, double %y) nounwind {
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%c = fcmp olt double %x, %y
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%d = select i1 %c, double %x, double %y
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ret double %d
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}
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; CHECK: ogt_inverse:
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; CHECK-NEXT: minsd %xmm0, %xmm1
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; CHECK-NEXT: movapd %xmm1, %xmm0
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; CHECK-NEXT: ret
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; uNSAFE: ogt_inverse:
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; uNSAFE-NEXT: minsd %xmm0, %xmm1
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; uNSAFE-NEXT: movapd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @ogt_inverse(double %x, double %y) nounwind {
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%c = fcmp ogt double %x, %y
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%d = select i1 %c, double %y, double %x
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ret double %d
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}
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; CHECK: olt_inverse:
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; CHECK-NEXT: maxsd %xmm0, %xmm1
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; CHECK-NEXT: movapd %xmm1, %xmm0
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; CHECK-NEXT: ret
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; uNSAFE: olt_inverse:
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; uNSAFE-NEXT: maxsd %xmm0, %xmm1
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; uNSAFE-NEXT: movapd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @olt_inverse(double %x, double %y) nounwind {
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%c = fcmp olt double %x, %y
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%d = select i1 %c, double %y, double %x
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ret double %d
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}
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; CHECK: oge:
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; CHECK-NEXT: ucomisd %xmm1, %xmm0
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; uNSAFE: oge:
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; uNSAFE-NEXT: maxsd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @oge(double %x, double %y) nounwind {
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%c = fcmp oge double %x, %y
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%d = select i1 %c, double %x, double %y
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ret double %d
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}
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; CHECK: ole:
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; CHECK-NEXT: ucomisd %xmm0, %xmm1
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; uNSAFE: ole:
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; uNSAFE-NEXT: minsd %xmm1, %xmm0
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define double @ole(double %x, double %y) nounwind {
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%c = fcmp ole double %x, %y
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%d = select i1 %c, double %x, double %y
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ret double %d
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}
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; CHECK: oge_inverse:
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; CHECK-NEXT: ucomisd %xmm1, %xmm0
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; uNSAFE: oge_inverse:
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; uNSAFE-NEXT: minsd %xmm0, %xmm1
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; uNSAFE-NEXT: movapd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @oge_inverse(double %x, double %y) nounwind {
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%c = fcmp oge double %x, %y
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%d = select i1 %c, double %y, double %x
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ret double %d
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}
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; CHECK: ole_inverse:
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; CHECK-NEXT: ucomisd %xmm0, %xmm1
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; uNSAFE: ole_inverse:
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; uNSAFE-NEXT: maxsd %xmm0, %xmm1
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; uNSAFE-NEXT: movapd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @ole_inverse(double %x, double %y) nounwind {
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%c = fcmp ole double %x, %y
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%d = select i1 %c, double %y, double %x
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ret double %d
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}
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; CHECK: x_ogt:
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; CHECK-NEXT: pxor %xmm1, %xmm1
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; CHECK-NEXT: maxsd %xmm1, %xmm0
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; CHECK-NEXT: ret
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; uNSAFE: x_ogt:
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; uNSAFE-NEXT: pxor %xmm1, %xmm1
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; uNSAFE-NEXT: maxsd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @x_ogt(double %x) nounwind {
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%c = fcmp ogt double %x, 0.000000e+00
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%d = select i1 %c, double %x, double 0.000000e+00
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ret double %d
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}
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; CHECK: x_olt:
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; CHECK-NEXT: pxor %xmm1, %xmm1
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; CHECK-NEXT: minsd %xmm1, %xmm0
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; CHECK-NEXT: ret
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; uNSAFE: x_olt:
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; uNSAFE-NEXT: pxor %xmm1, %xmm1
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; uNSAFE-NEXT: minsd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @x_olt(double %x) nounwind {
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%c = fcmp olt double %x, 0.000000e+00
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%d = select i1 %c, double %x, double 0.000000e+00
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ret double %d
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}
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; CHECK: x_ogt_inverse:
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; CHECK-NEXT: pxor %xmm1, %xmm1
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; CHECK-NEXT: minsd %xmm0, %xmm1
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; CHECK-NEXT: movapd %xmm1, %xmm0
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; CHECK-NEXT: ret
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; uNSAFE: x_ogt_inverse:
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; uNSAFE-NEXT: pxor %xmm1, %xmm1
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; uNSAFE-NEXT: minsd %xmm0, %xmm1
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; uNSAFE-NEXT: movapd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @x_ogt_inverse(double %x) nounwind {
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%c = fcmp ogt double %x, 0.000000e+00
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%d = select i1 %c, double 0.000000e+00, double %x
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ret double %d
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}
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; CHECK: x_olt_inverse:
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; CHECK-NEXT: pxor %xmm1, %xmm1
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; CHECK-NEXT: maxsd %xmm0, %xmm1
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; CHECK-NEXT: movapd %xmm1, %xmm0
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; CHECK-NEXT: ret
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; uNSAFE: x_olt_inverse:
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; uNSAFE-NEXT: pxor %xmm1, %xmm1
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; uNSAFE-NEXT: maxsd %xmm0, %xmm1
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; uNSAFE-NEXT: movapd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @x_olt_inverse(double %x) nounwind {
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%c = fcmp olt double %x, 0.000000e+00
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%d = select i1 %c, double 0.000000e+00, double %x
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ret double %d
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}
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; CHECK: x_oge:
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; CHECK: ucomisd %xmm1, %xmm0
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; uNSAFE: x_oge:
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; uNSAFE-NEXT: pxor %xmm1, %xmm1
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; uNSAFE-NEXT: maxsd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @x_oge(double %x) nounwind {
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%c = fcmp oge double %x, 0.000000e+00
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%d = select i1 %c, double %x, double 0.000000e+00
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ret double %d
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}
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; CHECK: x_ole:
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; CHECK: ucomisd %xmm0, %xmm1
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; uNSAFE: x_ole:
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; uNSAFE-NEXT: pxor %xmm1, %xmm1
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; uNSAFE-NEXT: minsd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @x_ole(double %x) nounwind {
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%c = fcmp ole double %x, 0.000000e+00
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%d = select i1 %c, double %x, double 0.000000e+00
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ret double %d
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}
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; CHECK: x_oge_inverse:
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; CHECK: ucomisd %xmm1, %xmm0
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; uNSAFE: x_oge_inverse:
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; uNSAFE-NEXT: pxor %xmm1, %xmm1
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; uNSAFE-NEXT: minsd %xmm0, %xmm1
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; uNSAFE-NEXT: movapd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @x_oge_inverse(double %x) nounwind {
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%c = fcmp oge double %x, 0.000000e+00
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%d = select i1 %c, double 0.000000e+00, double %x
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ret double %d
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}
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; CHECK: x_ole_inverse:
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; CHECK: ucomisd %xmm0, %xmm1
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; uNSAFE: x_ole_inverse:
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; uNSAFE-NEXT: pxor %xmm1, %xmm1
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; uNSAFE-NEXT: maxsd %xmm0, %xmm1
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; uNSAFE-NEXT: movapd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @x_ole_inverse(double %x) nounwind {
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%c = fcmp ole double %x, 0.000000e+00
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%d = select i1 %c, double 0.000000e+00, double %x
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ret double %d
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}
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; CHECK: ugt:
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; CHECK: ucomisd %xmm0, %xmm1
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; uNSAFE: ugt:
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; uNSAFE-NEXT: maxsd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @ugt(double %x, double %y) nounwind {
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%c = fcmp ugt double %x, %y
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%d = select i1 %c, double %x, double %y
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ret double %d
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}
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; CHECK: ult:
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; CHECK: ucomisd %xmm1, %xmm0
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; uNSAFE: ult:
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; uNSAFE-NEXT: minsd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @ult(double %x, double %y) nounwind {
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%c = fcmp ult double %x, %y
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%d = select i1 %c, double %x, double %y
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ret double %d
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}
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; CHECK: ugt_inverse:
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; CHECK: ucomisd %xmm0, %xmm1
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; uNSAFE: ugt_inverse:
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; uNSAFE-NEXT: minsd %xmm0, %xmm1
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; uNSAFE-NEXT: movapd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @ugt_inverse(double %x, double %y) nounwind {
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%c = fcmp ugt double %x, %y
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%d = select i1 %c, double %y, double %x
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ret double %d
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}
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; CHECK: ult_inverse:
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; CHECK: ucomisd %xmm1, %xmm0
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; uNSAFE: ult_inverse:
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; uNSAFE-NEXT: maxsd %xmm0, %xmm1
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; uNSAFE-NEXT: movapd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @ult_inverse(double %x, double %y) nounwind {
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%c = fcmp ult double %x, %y
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%d = select i1 %c, double %y, double %x
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ret double %d
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}
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; CHECK: uge:
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; CHECK-NEXT: maxsd %xmm1, %xmm0
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; CHECK-NEXT: ret
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; uNSAFE: uge:
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; uNSAFE-NEXT: maxsd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @uge(double %x, double %y) nounwind {
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%c = fcmp uge double %x, %y
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%d = select i1 %c, double %x, double %y
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ret double %d
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}
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; CHECK: ule:
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; CHECK-NEXT: minsd %xmm1, %xmm0
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; CHECK-NEXT: ret
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; uNSAFE: ule:
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; uNSAFE-NEXT: minsd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @ule(double %x, double %y) nounwind {
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%c = fcmp ule double %x, %y
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%d = select i1 %c, double %x, double %y
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ret double %d
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}
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; CHECK: uge_inverse:
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; CHECK-NEXT: minsd %xmm0, %xmm1
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; CHECK-NEXT: movapd %xmm1, %xmm0
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; CHECK-NEXT: ret
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; uNSAFE: uge_inverse:
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; uNSAFE-NEXT: minsd %xmm0, %xmm1
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; uNSAFE-NEXT: movapd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @uge_inverse(double %x, double %y) nounwind {
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%c = fcmp uge double %x, %y
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%d = select i1 %c, double %y, double %x
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ret double %d
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}
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; CHECK: ule_inverse:
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; CHECK-NEXT: maxsd %xmm0, %xmm1
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; CHECK-NEXT: movapd %xmm1, %xmm0
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; CHECK-NEXT: ret
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; uNSAFE: ule_inverse:
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; uNSAFE-NEXT: maxsd %xmm0, %xmm1
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; uNSAFE-NEXT: movapd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @ule_inverse(double %x, double %y) nounwind {
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%c = fcmp ule double %x, %y
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%d = select i1 %c, double %y, double %x
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ret double %d
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}
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; CHECK: x_ugt:
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; CHECK: ucomisd %xmm0, %xmm1
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; uNSAFE: x_ugt:
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; uNSAFE-NEXT: pxor %xmm1, %xmm1
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; uNSAFE-NEXT: maxsd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @x_ugt(double %x) nounwind {
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%c = fcmp ugt double %x, 0.000000e+00
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%d = select i1 %c, double %x, double 0.000000e+00
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ret double %d
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}
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; CHECK: x_ult:
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; CHECK: ucomisd %xmm1, %xmm0
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; uNSAFE: x_ult:
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; uNSAFE-NEXT: pxor %xmm1, %xmm1
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; uNSAFE-NEXT: minsd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @x_ult(double %x) nounwind {
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%c = fcmp ult double %x, 0.000000e+00
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%d = select i1 %c, double %x, double 0.000000e+00
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ret double %d
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}
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; CHECK: x_ugt_inverse:
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; CHECK: ucomisd %xmm0, %xmm1
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; uNSAFE: x_ugt_inverse:
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; uNSAFE-NEXT: pxor %xmm1, %xmm1
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; uNSAFE-NEXT: minsd %xmm0, %xmm1
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; uNSAFE-NEXT: movapd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @x_ugt_inverse(double %x) nounwind {
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%c = fcmp ugt double %x, 0.000000e+00
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%d = select i1 %c, double 0.000000e+00, double %x
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ret double %d
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}
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; CHECK: x_ult_inverse:
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; CHECK: ucomisd %xmm1, %xmm0
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; uNSAFE: x_ult_inverse:
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; uNSAFE-NEXT: pxor %xmm1, %xmm1
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; uNSAFE-NEXT: maxsd %xmm0, %xmm1
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; uNSAFE-NEXT: movapd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @x_ult_inverse(double %x) nounwind {
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%c = fcmp ult double %x, 0.000000e+00
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%d = select i1 %c, double 0.000000e+00, double %x
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ret double %d
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}
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; CHECK: x_uge:
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; CHECK-NEXT: pxor %xmm1, %xmm1
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; CHECK-NEXT: maxsd %xmm1, %xmm0
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; CHECK-NEXT: ret
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; uNSAFE: x_uge:
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; uNSAFE-NEXT: pxor %xmm1, %xmm1
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; uNSAFE-NEXT: maxsd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @x_uge(double %x) nounwind {
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%c = fcmp uge double %x, 0.000000e+00
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%d = select i1 %c, double %x, double 0.000000e+00
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ret double %d
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}
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; CHECK: x_ule:
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; CHECK-NEXT: pxor %xmm1, %xmm1
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; CHECK-NEXT: minsd %xmm1, %xmm0
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; CHECK-NEXT: ret
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; uNSAFE: x_ule:
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; uNSAFE-NEXT: pxor %xmm1, %xmm1
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; uNSAFE-NEXT: minsd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @x_ule(double %x) nounwind {
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%c = fcmp ule double %x, 0.000000e+00
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%d = select i1 %c, double %x, double 0.000000e+00
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ret double %d
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}
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; CHECK: x_uge_inverse:
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; CHECK-NEXT: pxor %xmm1, %xmm1
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; CHECK-NEXT: minsd %xmm0, %xmm1
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; CHECK-NEXT: movapd %xmm1, %xmm0
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; CHECK-NEXT: ret
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; uNSAFE: x_uge_inverse:
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; uNSAFE-NEXT: pxor %xmm1, %xmm1
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; uNSAFE-NEXT: minsd %xmm0, %xmm1
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; uNSAFE-NEXT: movapd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @x_uge_inverse(double %x) nounwind {
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%c = fcmp uge double %x, 0.000000e+00
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%d = select i1 %c, double 0.000000e+00, double %x
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ret double %d
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}
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; CHECK: x_ule_inverse:
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; CHECK-NEXT: pxor %xmm1, %xmm1
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; CHECK-NEXT: maxsd %xmm0, %xmm1
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; CHECK-NEXT: movapd %xmm1, %xmm0
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; CHECK-NEXT: ret
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; uNSAFE: x_ule_inverse:
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; uNSAFE-NEXT: pxor %xmm1, %xmm1
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; uNSAFE-NEXT: maxsd %xmm0, %xmm1
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; uNSAFE-NEXT: movapd %xmm1, %xmm0
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; uNSAFE-NEXT: ret
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define double @x_ule_inverse(double %x) nounwind {
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%c = fcmp ule double %x, 0.000000e+00
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%d = select i1 %c, double 0.000000e+00, double %x
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ret double %d
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}
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; Test a few more misc. cases.
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; CHECK: clampTo3k_a:
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; CHECK: minsd
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; uNSAFE: clampTo3k_a:
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; uNSAFE: minsd
|
|
define double @clampTo3k_a(double %x) nounwind readnone {
|
|
entry:
|
|
%0 = fcmp ogt double %x, 3.000000e+03 ; <i1> [#uses=1]
|
|
%x_addr.0 = select i1 %0, double 3.000000e+03, double %x ; <double> [#uses=1]
|
|
ret double %x_addr.0
|
|
}
|
|
|
|
; CHECK: clampTo3k_b:
|
|
; CHECK: minsd
|
|
; uNSAFE: clampTo3k_b:
|
|
; uNSAFE: minsd
|
|
define double @clampTo3k_b(double %x) nounwind readnone {
|
|
entry:
|
|
%0 = fcmp uge double %x, 3.000000e+03 ; <i1> [#uses=1]
|
|
%x_addr.0 = select i1 %0, double 3.000000e+03, double %x ; <double> [#uses=1]
|
|
ret double %x_addr.0
|
|
}
|
|
|
|
; CHECK: clampTo3k_c:
|
|
; CHECK: maxsd
|
|
; uNSAFE: clampTo3k_c:
|
|
; uNSAFE: maxsd
|
|
define double @clampTo3k_c(double %x) nounwind readnone {
|
|
entry:
|
|
%0 = fcmp olt double %x, 3.000000e+03 ; <i1> [#uses=1]
|
|
%x_addr.0 = select i1 %0, double 3.000000e+03, double %x ; <double> [#uses=1]
|
|
ret double %x_addr.0
|
|
}
|
|
|
|
; CHECK: clampTo3k_d:
|
|
; CHECK: maxsd
|
|
; uNSAFE: clampTo3k_d:
|
|
; uNSAFE: maxsd
|
|
define double @clampTo3k_d(double %x) nounwind readnone {
|
|
entry:
|
|
%0 = fcmp ule double %x, 3.000000e+03 ; <i1> [#uses=1]
|
|
%x_addr.0 = select i1 %0, double 3.000000e+03, double %x ; <double> [#uses=1]
|
|
ret double %x_addr.0
|
|
}
|
|
|
|
; CHECK: clampTo3k_e:
|
|
; CHECK: maxsd
|
|
; uNSAFE: clampTo3k_e:
|
|
; uNSAFE: maxsd
|
|
define double @clampTo3k_e(double %x) nounwind readnone {
|
|
entry:
|
|
%0 = fcmp olt double %x, 3.000000e+03 ; <i1> [#uses=1]
|
|
%x_addr.0 = select i1 %0, double 3.000000e+03, double %x ; <double> [#uses=1]
|
|
ret double %x_addr.0
|
|
}
|
|
|
|
; CHECK: clampTo3k_f:
|
|
; CHECK: maxsd
|
|
; uNSAFE: clampTo3k_f:
|
|
; uNSAFE: maxsd
|
|
define double @clampTo3k_f(double %x) nounwind readnone {
|
|
entry:
|
|
%0 = fcmp ule double %x, 3.000000e+03 ; <i1> [#uses=1]
|
|
%x_addr.0 = select i1 %0, double 3.000000e+03, double %x ; <double> [#uses=1]
|
|
ret double %x_addr.0
|
|
}
|
|
|
|
; CHECK: clampTo3k_g:
|
|
; CHECK: minsd
|
|
; uNSAFE: clampTo3k_g:
|
|
; uNSAFE: minsd
|
|
define double @clampTo3k_g(double %x) nounwind readnone {
|
|
entry:
|
|
%0 = fcmp ogt double %x, 3.000000e+03 ; <i1> [#uses=1]
|
|
%x_addr.0 = select i1 %0, double 3.000000e+03, double %x ; <double> [#uses=1]
|
|
ret double %x_addr.0
|
|
}
|
|
|
|
; CHECK: clampTo3k_h:
|
|
; CHECK: minsd
|
|
; uNSAFE: clampTo3k_h:
|
|
; uNSAFE: minsd
|
|
define double @clampTo3k_h(double %x) nounwind readnone {
|
|
entry:
|
|
%0 = fcmp uge double %x, 3.000000e+03 ; <i1> [#uses=1]
|
|
%x_addr.0 = select i1 %0, double 3.000000e+03, double %x ; <double> [#uses=1]
|
|
ret double %x_addr.0
|
|
}
|