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