130 lines
3.0 KiB
LLVM
130 lines
3.0 KiB
LLVM
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
||
|
|
; RUN: opt -S -ipsccp < %s | FileCheck %s
|
||
|
|
|
||
|
|
; Test that information about the true/false value of conditions themselves
|
||
|
|
; is also used, not information implied by comparisions.
|
||
|
|
|
||
|
|
define i32 @switch(i32 %x) {
|
||
|
|
; CHECK-LABEL: @switch(
|
||
|
|
; CHECK-NEXT: switch i32 [[X:%.*]], label [[CASE_DEFAULT:%.*]] [
|
||
|
|
; CHECK-NEXT: i32 0, label [[CASE_0:%.*]]
|
||
|
|
; CHECK-NEXT: i32 2, label [[CASE_2:%.*]]
|
||
|
|
; CHECK-NEXT: ]
|
||
|
|
; CHECK: case.0:
|
||
|
|
; CHECK-NEXT: br label [[END:%.*]]
|
||
|
|
; CHECK: case.2:
|
||
|
|
; CHECK-NEXT: br label [[END]]
|
||
|
|
; CHECK: case.default:
|
||
|
|
; CHECK-NEXT: br label [[END]]
|
||
|
|
; CHECK: end:
|
||
|
|
; CHECK-NEXT: ret i32 1
|
||
|
|
;
|
||
|
|
switch i32 %x, label %case.default [
|
||
|
|
i32 0, label %case.0
|
||
|
|
i32 2, label %case.2
|
||
|
|
]
|
||
|
|
|
||
|
|
case.0:
|
||
|
|
%add = add i32 %x, 1
|
||
|
|
br label %end
|
||
|
|
|
||
|
|
case.2:
|
||
|
|
%sub = sub i32 %x, 1
|
||
|
|
br label %end
|
||
|
|
|
||
|
|
case.default:
|
||
|
|
br label %end
|
||
|
|
|
||
|
|
end:
|
||
|
|
%phi = phi i32 [ %add, %case.0 ], [ %sub, %case.2 ], [ 1, %case.default]
|
||
|
|
ret i32 %phi
|
||
|
|
}
|
||
|
|
|
||
|
|
define i1 @assume(i32 %x) {
|
||
|
|
; CHECK-LABEL: @assume(
|
||
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp sge i32 [[X:%.*]], 0
|
||
|
|
; CHECK-NEXT: call void @llvm.assume(i1 [[CMP]])
|
||
|
|
; CHECK-NEXT: ret i1 true
|
||
|
|
;
|
||
|
|
%cmp = icmp sge i32 %x, 0
|
||
|
|
call void @llvm.assume(i1 %cmp)
|
||
|
|
ret i1 %cmp
|
||
|
|
}
|
||
|
|
|
||
|
|
define i32 @branch(i32 %x) {
|
||
|
|
; CHECK-LABEL: @branch(
|
||
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp sge i32 [[X:%.*]], 0
|
||
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN1:%.*]], label [[IF_THEN2:%.*]]
|
||
|
|
; CHECK: if.then1:
|
||
|
|
; CHECK-NEXT: br label [[IF2_THEN1:%.*]]
|
||
|
|
; CHECK: if2.then1:
|
||
|
|
; CHECK-NEXT: br label [[IF2_END:%.*]]
|
||
|
|
; CHECK: if2.end:
|
||
|
|
; CHECK-NEXT: ret i32 0
|
||
|
|
; CHECK: if.then2:
|
||
|
|
; CHECK-NEXT: br label [[IF3_THEN2:%.*]]
|
||
|
|
; CHECK: if3.then2:
|
||
|
|
; CHECK-NEXT: br label [[IF3_END:%.*]]
|
||
|
|
; CHECK: if3.end:
|
||
|
|
; CHECK-NEXT: ret i32 1
|
||
|
|
;
|
||
|
|
%cmp = icmp sge i32 %x, 0
|
||
|
|
br i1 %cmp, label %if.then1, label %if.then2
|
||
|
|
|
||
|
|
if.then1:
|
||
|
|
br i1 %cmp, label %if2.then1, label %if2.then2
|
||
|
|
|
||
|
|
if2.then1:
|
||
|
|
br label %if2.end
|
||
|
|
|
||
|
|
if2.then2:
|
||
|
|
br label %if2.end
|
||
|
|
|
||
|
|
if2.end:
|
||
|
|
%phi = phi i32 [ 0, %if2.then1 ], [ 1, %if2.then2 ]
|
||
|
|
ret i32 %phi
|
||
|
|
|
||
|
|
if.then2:
|
||
|
|
br i1 %cmp, label %if3.then1, label %if3.then2
|
||
|
|
|
||
|
|
if3.then1:
|
||
|
|
br label %if3.end
|
||
|
|
|
||
|
|
if3.then2:
|
||
|
|
br label %if3.end
|
||
|
|
|
||
|
|
if3.end:
|
||
|
|
%phi2 = phi i32 [ 0, %if3.then1 ], [ 1, %if3.then2 ]
|
||
|
|
ret i32 %phi2
|
||
|
|
}
|
||
|
|
|
||
|
|
define void @pr46814(i32 %a) {
|
||
|
|
; CHECK-LABEL: @pr46814(
|
||
|
|
; CHECK-NEXT: [[C1:%.*]] = icmp uge i32 [[A:%.*]], 10
|
||
|
|
; CHECK-NEXT: [[C2:%.*]] = icmp ult i32 [[A]], 20
|
||
|
|
; CHECK-NEXT: [[C3:%.*]] = and i1 [[C1]], [[C2]]
|
||
|
|
; CHECK-NEXT: br i1 [[C3]], label [[IF_1:%.*]], label [[EXIT:%.*]]
|
||
|
|
; CHECK: if.1:
|
||
|
|
; CHECK-NEXT: br label [[IF_2:%.*]]
|
||
|
|
; CHECK: if.2:
|
||
|
|
; CHECK-NEXT: br i1 true, label [[EXIT]], label [[EXIT]]
|
||
|
|
; CHECK: exit:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
;
|
||
|
|
%c1 = icmp uge i32 %a, 10
|
||
|
|
%c2 = icmp ult i32 %a, 20
|
||
|
|
%c3 = and i1 %c1, %c2
|
||
|
|
br i1 %c3, label %if.1, label %exit
|
||
|
|
|
||
|
|
if.1:
|
||
|
|
br i1 %c3, label %if.2, label %exit
|
||
|
|
|
||
|
|
if.2:
|
||
|
|
br i1 %c3, label %exit, label %exit
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
declare void @llvm.assume(i1)
|