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9a06e4c7c8
- Initial register pressure in the loop should be all the live defs into the loop. Not just those from loop preheader which is often empty. - When an instruction is hoisted, update register pressure from loop preheader to the original BB. - Treat only use of a virtual register as kill since the code is still SSA. llvm-svn: 116956
57 lines
2.0 KiB
LLVM
57 lines
2.0 KiB
LLVM
; RUN: llc < %s -march=x86-64 -mattr=+sse3,+sse41 -stats |& grep {8 machine-licm}
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; RUN: llc < %s -march=x86-64 -mattr=+sse3,+sse41 | FileCheck %s
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; rdar://6627786
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; rdar://7792037
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target triple = "x86_64-apple-darwin10.0"
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%struct.Key = type { i64 }
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%struct.__Rec = type opaque
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%struct.__vv = type { }
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define %struct.__vv* @t(%struct.Key* %desc, i64 %p) nounwind ssp {
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entry:
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br label %bb4
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bb4: ; preds = %bb.i, %bb26, %bb4, %entry
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; CHECK: %bb4
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; CHECK: xorb
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; CHECK: callq
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; CHECK: movq
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; CHECK: xorl
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; CHECK: xorb
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%0 = call i32 (...)* @xxGetOffsetForCode(i32 undef) nounwind ; <i32> [#uses=0]
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%ins = or i64 %p, 2097152 ; <i64> [#uses=1]
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%1 = call i32 (...)* @xxCalculateMidType(%struct.Key* %desc, i32 0) nounwind ; <i32> [#uses=1]
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%cond = icmp eq i32 %1, 1 ; <i1> [#uses=1]
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br i1 %cond, label %bb26, label %bb4
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bb26: ; preds = %bb4
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%2 = and i64 %ins, 15728640 ; <i64> [#uses=1]
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%cond.i = icmp eq i64 %2, 1048576 ; <i1> [#uses=1]
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br i1 %cond.i, label %bb.i, label %bb4
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bb.i: ; preds = %bb26
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%3 = load i32* null, align 4 ; <i32> [#uses=1]
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%4 = uitofp i32 %3 to float ; <float> [#uses=1]
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%.sum13.i = add i64 0, 4 ; <i64> [#uses=1]
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%5 = getelementptr i8* null, i64 %.sum13.i ; <i8*> [#uses=1]
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%6 = bitcast i8* %5 to i32* ; <i32*> [#uses=1]
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%7 = load i32* %6, align 4 ; <i32> [#uses=1]
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%8 = uitofp i32 %7 to float ; <float> [#uses=1]
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%.sum.i = add i64 0, 8 ; <i64> [#uses=1]
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%9 = getelementptr i8* null, i64 %.sum.i ; <i8*> [#uses=1]
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%10 = bitcast i8* %9 to i32* ; <i32*> [#uses=1]
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%11 = load i32* %10, align 4 ; <i32> [#uses=1]
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%12 = uitofp i32 %11 to float ; <float> [#uses=1]
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%13 = insertelement <4 x float> undef, float %4, i32 0 ; <<4 x float>> [#uses=1]
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%14 = insertelement <4 x float> %13, float %8, i32 1 ; <<4 x float>> [#uses=1]
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%15 = insertelement <4 x float> %14, float %12, i32 2 ; <<4 x float>> [#uses=1]
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store <4 x float> %15, <4 x float>* null, align 16
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br label %bb4
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}
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declare i32 @xxGetOffsetForCode(...)
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declare i32 @xxCalculateMidType(...)
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