mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 19:52:54 +01:00
610e37f8c5
Still boring, simply drop all edges to successors of DomBlock, and add an edge to to BB instead.
51 lines
1.3 KiB
LLVM
51 lines
1.3 KiB
LLVM
; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
|
|
; RUN: opt < %s -passes=simplifycfg -S | FileCheck %s
|
|
|
|
define i32 @foo(i32 %x) optforfuzzing {
|
|
entry:
|
|
%x.addr = alloca i32, align 4
|
|
store i32 %x, i32* %x.addr, align 4
|
|
%0 = load i32, i32* %x.addr, align 4
|
|
%cmp = icmp sgt i32 %0, 16
|
|
br i1 %cmp, label %land.rhs, label %land.end
|
|
|
|
land.rhs:
|
|
%1 = load i32, i32* %x.addr, align 4
|
|
%cmp1 = icmp slt i32 %1, 32
|
|
br label %land.end
|
|
|
|
land.end:
|
|
%2 = phi i1 [ false, %entry ], [ %cmp1, %land.rhs ]
|
|
%conv = zext i1 %2 to i32
|
|
ret i32 %conv
|
|
|
|
; CHECK-LABEL: define i32 @foo(i32 %x)
|
|
; CHECK: br i1 %cmp, label %land.rhs, label %land.end
|
|
; CHECK-LABEL: land.rhs:
|
|
; CHECK: br label %land.end
|
|
; CHECK-LABEL: land.end:
|
|
; CHECK: phi {{.*}} %entry {{.*}} %land.rhs
|
|
}
|
|
|
|
define i32 @bar(i32 %x) {
|
|
entry:
|
|
%x.addr = alloca i32, align 4
|
|
store i32 %x, i32* %x.addr, align 4
|
|
%0 = load i32, i32* %x.addr, align 4
|
|
%cmp = icmp sgt i32 %0, 16
|
|
br i1 %cmp, label %land.rhs, label %land.end
|
|
|
|
land.rhs:
|
|
%1 = load i32, i32* %x.addr, align 4
|
|
%cmp1 = icmp slt i32 %1, 32
|
|
br label %land.end
|
|
|
|
land.end:
|
|
%2 = phi i1 [ false, %entry ], [ %cmp1, %land.rhs ]
|
|
%conv = zext i1 %2 to i32
|
|
ret i32 %conv
|
|
|
|
; CHECK-LABEL: define i32 @bar(i32 %x)
|
|
; CHECK-NOT: br
|
|
}
|