forked from OSchip/llvm-project
47 lines
1.7 KiB
LLVM
47 lines
1.7 KiB
LLVM
; REQUIRES: asserts
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; RUN: opt -loop-rotate -licm %s -disable-output -debug-only=licm 2>&1 | FileCheck %s -check-prefix=LICM
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; RUN: opt -loop-rotate -licm %s -S | FileCheck %s
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; LICM-NOT: LICM sinking instruction: %.pre = load i8, i8* %arrayidx.phi.trans.insert
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; CHECK-LABEL: @fn1
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; CHECK-LABEL: entry:
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; CHECK: br i1 true, label %[[END:.*]], label %[[PH:.*]]
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; CHECK: [[PH]]:
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; CHECK: br label %[[CRIT:.*]]
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; CHECK: [[CRIT]]:
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; CHECK: load i8
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; CHECK: store i8
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; CHECK: br i1 true, label %[[ENDCRIT:.*]], label %[[CRIT]]
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; CHECK: [[ENDCRIT]]:
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; CHECK-NOT: load i8
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; CHECK: br label %[[END]]
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target datalayout = "E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-a:8:16-n32:64"
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target triple = "s390x-unknown-linux-gnu"
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define void @fn1() {
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entry:
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%g = alloca [9 x i8], align 1
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br label %for.body
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for.body: ; preds = %for.body.for.body_crit_edge, %entry
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%0 = phi i64 [ 0, %entry ], [ %phitmp, %for.body.for.body_crit_edge ]
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body.for.body_crit_edge ]
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%arrayidx = getelementptr inbounds [9 x i8], [9 x i8]* %g, i64 0, i64 %indvars.iv
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store i8 2, i8* %arrayidx, align 1
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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br i1 undef, label %for.end18, label %for.body.for.body_crit_edge
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for.body.for.body_crit_edge: ; preds = %for.body
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%arrayidx.phi.trans.insert = getelementptr inbounds [9 x i8], [9 x i8]* %g, i64 0, i64 %indvars.iv.next
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%.pre = load i8, i8* %arrayidx.phi.trans.insert, align 1
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%phitmp = zext i8 %.pre to i64
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br label %for.body
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for.end18: ; preds = %for.body
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store i64 %0, i64* undef, align 8
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ret void
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}
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