File: 2006-10-19-SwitchUnnecessaryBranching.ll

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llvm-toolchain-17 1%3A17.0.6-22
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; RUN: llc < %s -mtriple=i686-- -asm-verbose | FileCheck %s

@str = internal constant [14 x i8] c"Hello world!\0A\00"		; <ptr> [#uses=1]
@str.upgrd.1 = internal constant [13 x i8] c"Blah world!\0A\00"		; <ptr> [#uses=1]

define i32 @test(i32 %argc, ptr %argv) nounwind {
entry:
; CHECK: cmpl	$2
; CHECK-NEXT: je
; CHECK-NEXT: %entry

	switch i32 %argc, label %UnifiedReturnBlock [
		 i32 1, label %bb
		 i32 2, label %bb2
	]

bb:		; preds = %entry
	%tmp1 = tail call i32 (ptr, ...) @printf( ptr @str )		; <i32> [#uses=0]
	ret i32 0

bb2:		; preds = %entry
	%tmp4 = tail call i32 (ptr, ...) @printf( ptr @str.upgrd.1 )		; <i32> [#uses=0]
	ret i32 0

UnifiedReturnBlock:		; preds = %entry
	ret i32 0
}

declare i32 @printf(ptr, ...)