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ce7a663140
This helps us avoid silly copies when rematting values that are copied to a physical register: leaq _.str44(%rip), %rcx movq %rcx, %rsi call _strcmp becomes: leaq _.str44(%rip), %rsi call _strcmp The coalescer will not touch the movq because that would tie down the physical register. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90163 91177308-0d34-0410-b5e6-96231b3b80d8
45 lines
1.7 KiB
LLVM
45 lines
1.7 KiB
LLVM
; RUN: llc < %s -mtriple=i386-apple-darwin -disable-fp-elim -stats |& grep asm-printer | grep 58
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; PR2568
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@g_3 = external global i16 ; <i16*> [#uses=1]
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@g_5 = external global i32 ; <i32*> [#uses=3]
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declare i32 @func_15(i16 signext , i16 signext , i32) nounwind
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define void @func_9_entry_2E_ce(i8 %p_11) nounwind {
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newFuncRoot:
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br label %entry.ce
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entry.ce.ret.exitStub: ; preds = %entry.ce
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ret void
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entry.ce: ; preds = %newFuncRoot
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load i16* @g_3, align 2 ; <i16>:0 [#uses=1]
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icmp sgt i16 %0, 0 ; <i1>:1 [#uses=1]
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zext i1 %1 to i32 ; <i32>:2 [#uses=1]
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load i32* @g_5, align 4 ; <i32>:3 [#uses=4]
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icmp ugt i32 %2, %3 ; <i1>:4 [#uses=1]
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zext i1 %4 to i32 ; <i32>:5 [#uses=1]
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icmp eq i32 %3, 0 ; <i1>:6 [#uses=1]
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%.0 = select i1 %6, i32 1, i32 %3 ; <i32> [#uses=1]
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urem i32 1, %.0 ; <i32>:7 [#uses=2]
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sext i8 %p_11 to i16 ; <i16>:8 [#uses=1]
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trunc i32 %3 to i16 ; <i16>:9 [#uses=1]
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tail call i32 @func_15( i16 signext %8, i16 signext %9, i32 1 ) nounwind ; <i32>:10 [#uses=0]
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load i32* @g_5, align 4 ; <i32>:11 [#uses=1]
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trunc i32 %11 to i16 ; <i16>:12 [#uses=1]
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tail call i32 @func_15( i16 signext %12, i16 signext 1, i32 %7 ) nounwind ; <i32>:13 [#uses=0]
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sext i8 %p_11 to i32 ; <i32>:14 [#uses=1]
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%p_11.lobit = lshr i8 %p_11, 7 ; <i8> [#uses=1]
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%tmp = zext i8 %p_11.lobit to i32 ; <i32> [#uses=1]
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%tmp.not = xor i32 %tmp, 1 ; <i32> [#uses=1]
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%.015 = ashr i32 %14, %tmp.not ; <i32> [#uses=2]
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icmp eq i32 %.015, 0 ; <i1>:15 [#uses=1]
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%.016 = select i1 %15, i32 1, i32 %.015 ; <i32> [#uses=1]
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udiv i32 %7, %.016 ; <i32>:16 [#uses=1]
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icmp ult i32 %5, %16 ; <i1>:17 [#uses=1]
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zext i1 %17 to i32 ; <i32>:18 [#uses=1]
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store i32 %18, i32* @g_5, align 4
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br label %entry.ce.ret.exitStub
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}
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