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; RUN: opt -S -jump-threading -dce < %s | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; Function Attrs: nounwind uwtable
define i32 @test1(i32 %a, i32 %b) #0 {
entry:
%cmp = icmp sgt i32 %a, 5
tail call void @llvm.assume(i1 %cmp)
%cmp1 = icmp sgt i32 %b, 1234
br i1 %cmp1, label %if.then, label %if.else
; CHECK-LABEL: @test1
; CHECK: icmp sgt i32 %a, 5
; CHECK: call void @llvm.assume
; CHECK-NOT: icmp sgt i32 %a, 3
; CHECK: ret i32
if.then: ; preds = %entry
%cmp2 = icmp sgt i32 %a, 3
br i1 %cmp2, label %if.then3, label %return
if.then3: ; preds = %if.then
tail call void (...)* @bar() #1
br label %return
if.else: ; preds = %entry
tail call void (...)* @car() #1
br label %return
return: ; preds = %if.else, %if.then, %if.then3
%retval.0 = phi i32 [ 1, %if.then3 ], [ 0, %if.then ], [ 0, %if.else ]
ret i32 %retval.0
}
define i32 @test2(i32 %a) #0 {
entry:
%cmp = icmp sgt i32 %a, 5
tail call void @llvm.assume(i1 %cmp)
%cmp1 = icmp sgt i32 %a, 3
br i1 %cmp1, label %if.then, label %return
; CHECK-LABEL: @test2
; CHECK: icmp sgt i32 %a, 5
; CHECK: tail call void @llvm.assume
; CHECK: tail call void (...)* @bar()
; CHECK: ret i32 1
if.then: ; preds = %entry
tail call void (...)* @bar() #1
br label %return
return: ; preds = %entry, %if.then
%retval.0 = phi i32 [ 1, %if.then ], [ 0, %entry ]
ret i32 %retval.0
}
; Function Attrs: nounwind
declare void @llvm.assume(i1) #1
declare void @bar(...)
declare void @car(...)
attributes #0 = { nounwind uwtable }
attributes #1 = { nounwind }
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