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a09fbf0af0
from GVN, this also speeds it up, inserts fewer PHI nodes (see the testcase) and allows it to remove more loads (due to fewer PHI nodes standing in the way). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83746 91177308-0d34-0410-b5e6-96231b3b80d8
29 lines
1.1 KiB
LLVM
29 lines
1.1 KiB
LLVM
; RUN: opt < %s -gvn -S | not grep phi
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%struct..0anon = type { i32 }
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%struct.FILE = type { i8*, i32, i32, i16, i16, %struct.__sbuf, i32, i8*, i32 (i8*)*, i32 (i8*, i8*, i32)*, i64 (i8*, i64, i32)*, i32 (i8*, i8*, i32)*, %struct.__sbuf, %struct.__sFILEX*, i32, [3 x i8], [1 x i8], %struct.__sbuf, i32, i64 }
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%struct.__sFILEX = type opaque
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%struct.__sbuf = type { i8*, i32 }
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%struct.rtx_def = type { i16, i8, i8, [1 x %struct..0anon] }
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@n_spills = external global i32 ; <i32*> [#uses=2]
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define i32 @reload(%struct.rtx_def* %first, i32 %global, %struct.FILE* %dumpfile) {
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cond_next2835.1: ; preds = %cond_next2861
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%tmp2922 = load i32* @n_spills, align 4 ; <i32> [#uses=0]
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br label %bb2928
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bb2928: ; preds = %cond_next2835.1, %cond_next2943
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br i1 false, label %cond_next2943, label %cond_true2935
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cond_true2935: ; preds = %bb2928
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br label %cond_next2943
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cond_next2943: ; preds = %cond_true2935, %bb2928
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br i1 false, label %bb2982.preheader, label %bb2928
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bb2982.preheader: ; preds = %cond_next2943
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%tmp298316 = load i32* @n_spills, align 4 ; <i32> [#uses=0]
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ret i32 %tmp298316
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}
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