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Diffstat (limited to 'test/CodeGen/X86/codegen-prepare.ll')
| -rw-r--r-- | test/CodeGen/X86/codegen-prepare.ll | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/test/CodeGen/X86/codegen-prepare.ll b/test/CodeGen/X86/codegen-prepare.ll new file mode 100644 index 0000000000..e8ee070635 --- /dev/null +++ b/test/CodeGen/X86/codegen-prepare.ll @@ -0,0 +1,44 @@ +; RUN: llc < %s -mtriple=x86_64-pc-linux | FileCheck %s + +; Check that the CodeGenPrepare Pass +; does not wrongly rewrite the address computed by Instruction %4 +; as [12 + Base:%this]. + +; This test makes sure that: +; - both the store and the first load instructions +; within basic block labeled 'if.then' are not removed. +; - the store instruction stores a value at address [60 + %this] +; - the first load instruction loads a value at address [12 + %this] + +%class.A = type { %struct.B } +%struct.B = type { %class.C, %class.D, %class.C, %class.D } +%class.C = type { float, float, float } +%class.D = type { [3 x %class.C] } + +define linkonce_odr void @foo(%class.A* nocapture %this, i32 %BoolValue) nounwind uwtable { +entry: + %cmp = icmp eq i32 %BoolValue, 0 + %address1 = getelementptr inbounds %class.A* %this, i64 0, i32 0, i32 3 + %address2 = getelementptr inbounds %class.A* %this, i64 0, i32 0, i32 1 + br i1 %cmp, label %if.else, label %if.then + +if.then: ; preds = %entry + %0 = getelementptr inbounds %class.D* %address2, i64 0, i32 0, i64 0, i32 0 + %1 = load float* %0, align 4 + %2 = getelementptr inbounds float* %0, i64 3 + %3 = load float* %2, align 4 + %4 = getelementptr inbounds %class.D* %address1, i64 0, i32 0, i64 0, i32 0 + store float %1, float* %4, align 4 + br label %if.end + +if.else: ; preds = %entry + br label %if.end + +if.end: ; preds = %if.then, %if.else, %entry + ret void +} + +; CHECK: foo: +; CHECK: movss 12([[THIS:%[a-zA-Z0-9]+]]), [[REGISTER:%[a-zA-Z0-9]+]] +; CHECK-NEXT: movss [[REGISTER]], 60([[THIS]]) + |