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- ; RUN: opt -basicaa -gvn -S < %s | FileCheck %s
- target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-f128:128:128-n8:16:32:64"
- ; GVN shouldn't PRE the load around the loop backedge because it's
- ; not actually redundant around the loop backedge, despite appearances
- ; if phi-translation is ignored.
- ; CHECK: define void @test0(i8* %begin)
- ; CHECK: loop:
- ; CHECK: %l0 = load i8, i8* %phi
- ; CHECK: call void @bar(i8 %l0)
- ; CHECK: %l1 = load i8, i8* %phi
- define void @test0(i8* %begin) {
- entry:
- br label %loop
- loop:
- %phi = phi i8* [ %begin, %entry ], [ %next, %loop ]
- %l0 = load i8, i8* %phi
- call void @bar(i8 %l0)
- %l1 = load i8, i8* %phi
- %next = getelementptr inbounds i8, i8* %phi, i8 %l1
- br label %loop
- }
- declare void @bar(i8)
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