42 lines
938 B
LLVM
42 lines
938 B
LLVM
; RUN: opt < %s -simplifycfg -S | FileCheck %s
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; int foo1_with_default(int a) {
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; switch(a) {
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; case 10:
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; return 10;
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; case 20:
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; return 2;
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; }
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; return 4;
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; }
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define i32 @foo1_with_default(i32 %a) {
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; CHECK-LABEL: @foo1_with_default(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[SWITCH_SELECTCMP:%.*]] = icmp eq i32 %a, 20
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; CHECK-NEXT: [[SWITCH_SELECT:%.*]] = select i1 [[SWITCH_SELECTCMP:%.*]], i32 2, i32 4
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; CHECK-NEXT: [[SWITCH_SELECTCMP1:%.*]] = icmp eq i32 %a, 10
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; CHECK-NEXT: [[SWITCH_SELECT2:%.*]] = select i1 [[SWITCH_SELECTCMP1]], i32 10, i32 [[SWITCH_SELECT]]
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; CHECK-NEXT: ret i32 [[SWITCH_SELECT2]]
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;
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entry:
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switch i32 %a, label %sw.epilog [
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i32 10, label %sw.bb
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i32 20, label %sw.bb1
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]
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sw.bb:
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br label %return
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sw.bb1:
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br label %return
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sw.epilog:
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br label %return
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return:
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%retval.0 = phi i32 [ 4, %sw.epilog ], [ 2, %sw.bb1 ], [ 10, %sw.bb ]
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ret i32 %retval.0
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}
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