forked from OSchip/llvm-project
87 lines
2.5 KiB
LLVM
87 lines
2.5 KiB
LLVM
; RUN: opt -flattencfg -S < %s | FileCheck %s
|
|
|
|
|
|
; This test checks whether the pass completes without a crash.
|
|
; The code is not transformed in any way
|
|
;
|
|
; CHECK-LABEL: @test_not_crash
|
|
define void @test_not_crash(i32 %in_a) #0 {
|
|
entry:
|
|
%cmp0 = icmp eq i32 %in_a, -1
|
|
%cmp1 = icmp ne i32 %in_a, 0
|
|
%cond0 = and i1 %cmp0, %cmp1
|
|
br i1 %cond0, label %b0, label %b1
|
|
|
|
b0: ; preds = %entry
|
|
%cmp2 = icmp eq i32 %in_a, 0
|
|
%cmp3 = icmp ne i32 %in_a, 1
|
|
%cond1 = or i1 %cmp2, %cmp3
|
|
br i1 %cond1, label %exit, label %b1
|
|
|
|
b1: ; preds = %entry, %b0
|
|
br label %exit
|
|
|
|
exit: ; preds = %entry, %b0, %b1
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: @test_not_crash2
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: %0 = fcmp ult float %a
|
|
; CHECK-NEXT: %1 = fcmp ult float %b
|
|
; CHECK-NEXT: [[COND:%[a-z0-9]+]] = or i1 %0, %1
|
|
; CHECK-NEXT: br i1 [[COND]], label %bb4, label %bb3
|
|
; CHECK: bb3:
|
|
; CHECK-NEXT: br label %bb4
|
|
; CHECK: bb4:
|
|
; CHECK-NEXT: ret void
|
|
define void @test_not_crash2(float %a, float %b) #0 {
|
|
entry:
|
|
%0 = fcmp ult float %a, 1.000000e+00
|
|
br i1 %0, label %bb0, label %bb1
|
|
|
|
bb3: ; preds = %bb0
|
|
br label %bb4
|
|
|
|
bb4: ; preds = %bb0, %bb3
|
|
ret void
|
|
|
|
bb1: ; preds = %entry
|
|
br label %bb0
|
|
|
|
bb0: ; preds = %bb1, %entry
|
|
%1 = fcmp ult float %b, 1.000000e+00
|
|
br i1 %1, label %bb4, label %bb3
|
|
}
|
|
|
|
; CHECK-LABEL: @test_not_crash3
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: %a_eq_0 = icmp eq i32 %a, 0
|
|
; CHECK-NEXT: %a_eq_1 = icmp eq i32 %a, 1
|
|
; CHECK-NEXT: [[COND:%[a-z0-9]+]] = or i1 %a_eq_0, %a_eq_1
|
|
; CHECK-NEXT: br i1 [[COND]], label %bb2, label %bb3
|
|
; CHECK: bb2:
|
|
; CHECK-NEXT: br label %bb3
|
|
; CHECK: bb3:
|
|
; CHECK-NEXT: %check_badref = phi i32 [ 17, %entry ], [ 11, %bb2 ]
|
|
; CHECK-NEXT: ret void
|
|
define void @test_not_crash3(i32 %a) #0 {
|
|
entry:
|
|
%a_eq_0 = icmp eq i32 %a, 0
|
|
br i1 %a_eq_0, label %bb0, label %bb1
|
|
|
|
bb0: ; preds = %entry
|
|
br label %bb1
|
|
|
|
bb1: ; preds = %bb0, %entry
|
|
%a_eq_1 = icmp eq i32 %a, 1
|
|
br i1 %a_eq_1, label %bb2, label %bb3
|
|
|
|
bb2: ; preds = %bb1
|
|
br label %bb3
|
|
|
|
bb3: ; preds = %bb2, %bb1
|
|
%check_badref = phi i32 [ 17, %bb1 ], [ 11, %bb2 ]
|
|
ret void
|
|
}
|