50 lines
1.3 KiB
LLVM
50 lines
1.3 KiB
LLVM
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; RUN: opt -ipsccp -S %s | FileCheck %s
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%struct.S = type { i32 }
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define void @main() {
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; CHECK-LABEL: void @main() {
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; CHECK-NEXT: %r = call i32 @f(%struct.S { i32 100 })
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; CHECK-NEXT: call void @do_report(i32 123)
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%r = call i32 @f(%struct.S { i32 100 })
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call void @do_report(i32 %r)
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ret void
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}
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declare void @do_report(i32)
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define internal i32 @f(%struct.S %s.coerce) {
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; CHECK-LABEL: define internal i32 @f(%struct.S %s.coerce)
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; CHECK-LABEL: entry:
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; CHECK-NEXT: %call = call i8 @lsh(i8 1, i32 100)
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; CHECK-LABEL: if.end:
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; CHECK-NEXT: ret i32 undef
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entry:
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%ev = extractvalue %struct.S %s.coerce, 0
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%call = call i8 @lsh(i8 1, i32 %ev)
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%tobool = icmp ne i8 %call, 0
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br i1 %tobool, label %for.cond, label %if.end
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for.cond: ; preds = %for.cond, %if.then
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%i.0 = phi i32 [ 0, %entry], [ %inc, %for.cond ]
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%cmp = icmp slt i32 %i.0, 1
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%inc = add nsw i32 %i.0, 1
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br i1 %cmp, label %for.cond, label %if.end
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if.end: ; preds = %for.cond, %entry
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ret i32 123
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}
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define internal i8 @lsh(i8 %l, i32 %r) {
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entry:
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%conv = sext i8 %l to i32
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%cmp = icmp slt i32 %conv, 0
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%shr = ashr i32 127, %r
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%cmp4 = icmp sgt i32 %conv, %shr
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%or.cond13 = or i1 %cmp, %cmp4
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%cond = select i1 %or.cond13, i32 %conv, i32 0
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%conv7 = trunc i32 %cond to i8
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ret i8 %conv7
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}
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