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llvm-project/llvm/test/CodeGen/X86/fp-stack-compare.ll

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Have the X86 back-end emit the alias instead of what's being aliased. In most cases, it's much nicer and more informative reading the alias. llvm-svn: 129497
2011-04-14 09:11:51 +08:00
; RUN: llc < %s -march=x86 -mcpu=i386 | FileCheck %s
X86: Don't emit conditional floating point moves on when targeting pre-pentiumpro architectures. * Model FPSW (the FPU status word) as a register. * Add ISel patterns for the FUCOM*, FNSTSW and SAHF instructions. * During Legalize/Lowering, build a node sequence to transfer the comparison result from FPSW into EFLAGS. If you're wondering about the right-shift: That's an implicit sub-register extraction (%ax -> %ah) which is handled later on by the instruction selector. Fixes PR6679. Patch by Christoph Erhardt! llvm-svn: 155704
2012-04-27 20:07:43 +08:00
; PR6679
Testcase for pr1012 llvm-svn: 31875
2006-11-21 01:55:30 +08:00
Remove llvm-upgrade and update tests. llvm-svn: 47432
2008-02-21 15:42:26 +08:00
define float @foo(float* %col.2.0) {
X86: Don't emit conditional floating point moves on when targeting pre-pentiumpro architectures. * Model FPSW (the FPU status word) as a register. * Add ISel patterns for the FUCOM*, FNSTSW and SAHF instructions. * During Legalize/Lowering, build a node sequence to transfer the comparison result from FPSW into EFLAGS. If you're wondering about the right-shift: That's an implicit sub-register extraction (%ax -> %ah) which is handled later on by the instruction selector. Fixes PR6679. Patch by Christoph Erhardt! llvm-svn: 155704
2012-04-27 20:07:43 +08:00
; CHECK: fucomp
; CHECK-NOT: fucompi
; CHECK: j
; CHECK-NOT: fcmov
Have the X86 back-end emit the alias instead of what's being aliased. In most cases, it's much nicer and more informative reading the alias. llvm-svn: 129497
2011-04-14 09:11:51 +08:00
%tmp = load float* %col.2.0
%tmp16 = fcmp olt float %tmp, 0.000000e+00
%tmp20 = fsub float -0.000000e+00, %tmp
%iftmp.2.0 = select i1 %tmp16, float %tmp20, float %tmp
ret float %iftmp.2.0
Testcase for pr1012 llvm-svn: 31875
2006-11-21 01:55:30 +08:00
}