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llvm-mirror/test/CodeGen/X86/fold-pcmpeqd-0.ll
Evan Cheng 4760ff0763 Use a bigger hammer to fix PR11314 by disabling the "forcing two-address
instruction lower optimization" in the pre-RA scheduler.

The optimization, rather the hack, was done before MI use-list was available.
Now we should be able to implement it in a better way, perhaps in the
two-address pass until a MI scheduler is available.

Now that the scheduler has to backtrack to handle call sequences. Adding
artificial scheduling constraints is just not safe. Furthermore, the hack
is not taking all the other scheduling decisions into consideration so it's just
as likely to pessimize code. So I view disabling this optimization goodness
regardless of PR11314.

llvm-svn: 144267
2011-11-10 07:43:16 +00:00

118 lines
8.0 KiB
LLVM

; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck --check-prefix=X86-64 %s
; DISABLED: llc < %s -mtriple=i386-apple-darwin -mcpu=yonah -regalloc=linearscan | FileCheck --check-prefix=I386 %s
; i386 test has been disabled when scheduler 2-addr hack is disabled.
; This testcase shouldn't need to spill the -1 value,
; so it should just use pcmpeqd to materialize an all-ones vector.
; For i386, cp load of -1 are folded.
; With -regalloc=greedy, the live range is split before spilling, so the first
; pcmpeq doesn't get folded as a constant pool load.
; I386-NOT: pcmpeqd
; I386: orps LCPI0_2, %xmm
; I386-NOT: pcmpeqd
; I386: orps LCPI0_2, %xmm
; X86-64: pcmpeqd
; X86-64-NOT: pcmpeqd
%struct.__ImageExecInfo = type <{ <4 x i32>, <4 x float>, <2 x i64>, i8*, i8*, i8*, i32, i32, i32, i32, i32 }>
%struct._cl_image_format_t = type <{ i32, i32, i32 }>
%struct._image2d_t = type <{ i8*, %struct._cl_image_format_t, i32, i32, i32, i32, i32, i32 }>
define void @program_1(%struct._image2d_t* %dest, %struct._image2d_t* %t0, <4 x float> %p0, <4 x float> %p1, <4 x float> %p4, <4 x float> %p5, <4 x float> %p6) nounwind {
entry:
%tmp3.i = load i32* null ; <i32> [#uses=1]
%cmp = icmp sgt i32 %tmp3.i, 200 ; <i1> [#uses=1]
br i1 %cmp, label %forcond, label %ifthen
ifthen: ; preds = %entry
ret void
forcond: ; preds = %entry
%tmp3.i536 = load i32* null ; <i32> [#uses=1]
%cmp12 = icmp slt i32 0, %tmp3.i536 ; <i1> [#uses=1]
br i1 %cmp12, label %forbody, label %afterfor
forbody: ; preds = %forcond
%bitcast204.i313 = bitcast <4 x i32> zeroinitializer to <4 x float> ; <<4 x float>> [#uses=1]
%mul233 = fmul <4 x float> %bitcast204.i313, zeroinitializer ; <<4 x float>> [#uses=1]
%mul257 = fmul <4 x float> %mul233, zeroinitializer ; <<4 x float>> [#uses=1]
%mul275 = fmul <4 x float> %mul257, zeroinitializer ; <<4 x float>> [#uses=1]
%tmp51 = call <4 x float> @llvm.x86.sse.max.ps(<4 x float> %mul275, <4 x float> zeroinitializer) nounwind ; <<4 x float>> [#uses=1]
%bitcast198.i182 = bitcast <4 x float> zeroinitializer to <4 x i32> ; <<4 x i32>> [#uses=0]
%bitcast204.i185 = bitcast <4 x i32> zeroinitializer to <4 x float> ; <<4 x float>> [#uses=1]
%tmp69 = call <4 x i32> @llvm.x86.sse2.cvttps2dq(<4 x float> zeroinitializer) nounwind ; <<4 x i32>> [#uses=1]
%tmp70 = call <4 x float> @llvm.x86.sse2.cvtdq2ps(<4 x i32> %tmp69) nounwind ; <<4 x float>> [#uses=1]
%sub140.i78 = fsub <4 x float> zeroinitializer, %tmp70 ; <<4 x float>> [#uses=2]
%mul166.i86 = fmul <4 x float> zeroinitializer, %sub140.i78 ; <<4 x float>> [#uses=1]
%add167.i87 = fadd <4 x float> %mul166.i86, < float 0x3FE62ACB60000000, float 0x3FE62ACB60000000, float 0x3FE62ACB60000000, float 0x3FE62ACB60000000 > ; <<4 x float>> [#uses=1]
%mul171.i88 = fmul <4 x float> %add167.i87, %sub140.i78 ; <<4 x float>> [#uses=1]
%add172.i89 = fadd <4 x float> %mul171.i88, < float 0x3FF0000A40000000, float 0x3FF0000A40000000, float 0x3FF0000A40000000, float 0x3FF0000A40000000 > ; <<4 x float>> [#uses=1]
%bitcast176.i90 = bitcast <4 x float> %add172.i89 to <4 x i32> ; <<4 x i32>> [#uses=1]
%andnps178.i92 = and <4 x i32> %bitcast176.i90, zeroinitializer ; <<4 x i32>> [#uses=1]
%bitcast179.i93 = bitcast <4 x i32> %andnps178.i92 to <4 x float> ; <<4 x float>> [#uses=1]
%mul186.i96 = fmul <4 x float> %bitcast179.i93, zeroinitializer ; <<4 x float>> [#uses=1]
%bitcast190.i98 = bitcast <4 x float> %mul186.i96 to <4 x i32> ; <<4 x i32>> [#uses=1]
%andnps192.i100 = and <4 x i32> %bitcast190.i98, zeroinitializer ; <<4 x i32>> [#uses=1]
%xorps.i102 = xor <4 x i32> zeroinitializer, < i32 -1, i32 -1, i32 -1, i32 -1 > ; <<4 x i32>> [#uses=1]
%orps203.i103 = or <4 x i32> %andnps192.i100, %xorps.i102 ; <<4 x i32>> [#uses=1]
%bitcast204.i104 = bitcast <4 x i32> %orps203.i103 to <4 x float> ; <<4 x float>> [#uses=1]
%cmple.i = call <4 x float> @llvm.x86.sse.cmp.ps(<4 x float> zeroinitializer, <4 x float> %tmp51, i8 2) nounwind ; <<4 x float>> [#uses=1]
%tmp80 = call <4 x float> @llvm.x86.sse2.cvtdq2ps(<4 x i32> zeroinitializer) nounwind ; <<4 x float>> [#uses=1]
%sub140.i = fsub <4 x float> zeroinitializer, %tmp80 ; <<4 x float>> [#uses=1]
%bitcast148.i = bitcast <4 x float> zeroinitializer to <4 x i32> ; <<4 x i32>> [#uses=1]
%andnps150.i = and <4 x i32> %bitcast148.i, < i32 -2139095041, i32 -2139095041, i32 -2139095041, i32 -2139095041 > ; <<4 x i32>> [#uses=0]
%mul171.i = fmul <4 x float> zeroinitializer, %sub140.i ; <<4 x float>> [#uses=1]
%add172.i = fadd <4 x float> %mul171.i, < float 0x3FF0000A40000000, float 0x3FF0000A40000000, float 0x3FF0000A40000000, float 0x3FF0000A40000000 > ; <<4 x float>> [#uses=1]
%bitcast176.i = bitcast <4 x float> %add172.i to <4 x i32> ; <<4 x i32>> [#uses=1]
%andnps178.i = and <4 x i32> %bitcast176.i, zeroinitializer ; <<4 x i32>> [#uses=1]
%bitcast179.i = bitcast <4 x i32> %andnps178.i to <4 x float> ; <<4 x float>> [#uses=1]
%mul186.i = fmul <4 x float> %bitcast179.i, zeroinitializer ; <<4 x float>> [#uses=1]
%bitcast189.i = bitcast <4 x float> zeroinitializer to <4 x i32> ; <<4 x i32>> [#uses=0]
%bitcast190.i = bitcast <4 x float> %mul186.i to <4 x i32> ; <<4 x i32>> [#uses=1]
%andnps192.i = and <4 x i32> %bitcast190.i, zeroinitializer ; <<4 x i32>> [#uses=1]
%bitcast198.i = bitcast <4 x float> %cmple.i to <4 x i32> ; <<4 x i32>> [#uses=1]
%xorps.i = xor <4 x i32> %bitcast198.i, < i32 -1, i32 -1, i32 -1, i32 -1 > ; <<4 x i32>> [#uses=1]
%orps203.i = or <4 x i32> %andnps192.i, %xorps.i ; <<4 x i32>> [#uses=1]
%bitcast204.i = bitcast <4 x i32> %orps203.i to <4 x float> ; <<4 x float>> [#uses=1]
%mul307 = fmul <4 x float> %bitcast204.i185, zeroinitializer ; <<4 x float>> [#uses=1]
%mul310 = fmul <4 x float> %bitcast204.i104, zeroinitializer ; <<4 x float>> [#uses=2]
%mul313 = fmul <4 x float> %bitcast204.i, zeroinitializer ; <<4 x float>> [#uses=1]
%tmp82 = call <4 x float> @llvm.x86.sse.min.ps(<4 x float> %mul307, <4 x float> zeroinitializer) nounwind ; <<4 x float>> [#uses=1]
%bitcast11.i15 = bitcast <4 x float> %tmp82 to <4 x i32> ; <<4 x i32>> [#uses=1]
%andnps.i17 = and <4 x i32> %bitcast11.i15, zeroinitializer ; <<4 x i32>> [#uses=1]
%orps.i18 = or <4 x i32> %andnps.i17, zeroinitializer ; <<4 x i32>> [#uses=1]
%bitcast17.i19 = bitcast <4 x i32> %orps.i18 to <4 x float> ; <<4 x float>> [#uses=1]
%tmp83 = call <4 x float> @llvm.x86.sse.min.ps(<4 x float> %mul310, <4 x float> zeroinitializer) nounwind ; <<4 x float>> [#uses=1]
%bitcast.i3 = bitcast <4 x float> %mul310 to <4 x i32> ; <<4 x i32>> [#uses=1]
%bitcast6.i4 = bitcast <4 x float> zeroinitializer to <4 x i32> ; <<4 x i32>> [#uses=2]
%andps.i5 = and <4 x i32> %bitcast.i3, %bitcast6.i4 ; <<4 x i32>> [#uses=1]
%bitcast11.i6 = bitcast <4 x float> %tmp83 to <4 x i32> ; <<4 x i32>> [#uses=1]
%not.i7 = xor <4 x i32> %bitcast6.i4, < i32 -1, i32 -1, i32 -1, i32 -1 > ; <<4 x i32>> [#uses=1]
%andnps.i8 = and <4 x i32> %bitcast11.i6, %not.i7 ; <<4 x i32>> [#uses=1]
%orps.i9 = or <4 x i32> %andnps.i8, %andps.i5 ; <<4 x i32>> [#uses=1]
%bitcast17.i10 = bitcast <4 x i32> %orps.i9 to <4 x float> ; <<4 x float>> [#uses=1]
%bitcast.i = bitcast <4 x float> %mul313 to <4 x i32> ; <<4 x i32>> [#uses=1]
%andps.i = and <4 x i32> %bitcast.i, zeroinitializer ; <<4 x i32>> [#uses=1]
%orps.i = or <4 x i32> zeroinitializer, %andps.i ; <<4 x i32>> [#uses=1]
%bitcast17.i = bitcast <4 x i32> %orps.i to <4 x float> ; <<4 x float>> [#uses=1]
call void null(<4 x float> %bitcast17.i19, <4 x float> %bitcast17.i10, <4 x float> %bitcast17.i, <4 x float> zeroinitializer, %struct.__ImageExecInfo* null, <4 x i32> zeroinitializer) nounwind
unreachable
afterfor: ; preds = %forcond
ret void
}
declare <4 x float> @llvm.x86.sse.cmp.ps(<4 x float>, <4 x float>, i8) nounwind readnone
declare <4 x float> @llvm.x86.sse2.cvtdq2ps(<4 x i32>) nounwind readnone
declare <4 x i32> @llvm.x86.sse2.cvttps2dq(<4 x float>) nounwind readnone
declare <4 x float> @llvm.x86.sse.max.ps(<4 x float>, <4 x float>) nounwind readnone
declare <4 x float> @llvm.x86.sse.min.ps(<4 x float>, <4 x float>) nounwind readnone