forked from OSchip/llvm-project
68 lines
2.2 KiB
LLVM
68 lines
2.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt < %s -simplifycfg -S | FileCheck %s
|
|
|
|
@G = extern_weak global i32
|
|
|
|
; PR3354
|
|
; Do not merge bb1 into the entry block, it might trap.
|
|
|
|
define i32 @admiral(i32 %a, i32 %b) {
|
|
; CHECK-LABEL: @admiral(
|
|
; CHECK-NEXT: [[C:%.*]] = icmp sle i32 [[A:%.*]], [[B:%.*]]
|
|
; CHECK-NEXT: br i1 [[C]], label [[BB2:%.*]], label [[BB1:%.*]]
|
|
; CHECK: bb1:
|
|
; CHECK-NEXT: [[D:%.*]] = icmp sgt i32 sdiv (i32 -32768, i32 ptrtoint (i32* @G to i32)), 0
|
|
; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[D]], i32 927, i32 42
|
|
; CHECK-NEXT: br label [[BB2]]
|
|
; CHECK: bb2:
|
|
; CHECK-NEXT: [[MERGE:%.*]] = phi i32 [ 42, [[TMP0:%.*]] ], [ [[SPEC_SELECT]], [[BB1]] ]
|
|
; CHECK-NEXT: ret i32 [[MERGE]]
|
|
;
|
|
%c = icmp sle i32 %a, %b
|
|
br i1 %c, label %bb2, label %bb1
|
|
bb1:
|
|
%d = icmp sgt i32 sdiv (i32 -32768, i32 ptrtoint (i32* @G to i32)), 0
|
|
br i1 %d, label %bb6, label %bb2
|
|
bb2:
|
|
ret i32 42
|
|
bb6:
|
|
ret i32 927
|
|
}
|
|
|
|
define i32 @ackbar(i1 %c) {
|
|
; CHECK-LABEL: @ackbar(
|
|
; CHECK-NEXT: br i1 [[C:%.*]], label [[BB5:%.*]], label [[BB6:%.*]]
|
|
; CHECK: bb5:
|
|
; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 icmp sgt (i32 sdiv (i32 32767, i32 ptrtoint (i32* @G to i32)), i32 0), i32 42, i32 927
|
|
; CHECK-NEXT: br label [[BB6]]
|
|
; CHECK: bb6:
|
|
; CHECK-NEXT: [[MERGE:%.*]] = phi i32 [ 42, [[TMP0:%.*]] ], [ [[SPEC_SELECT]], [[BB5]] ]
|
|
; CHECK-NEXT: ret i32 [[MERGE]]
|
|
;
|
|
br i1 %c, label %bb5, label %bb6
|
|
bb5:
|
|
br i1 icmp sgt (i32 sdiv (i32 32767, i32 ptrtoint (i32* @G to i32)), i32 0), label %bb6, label %bb7
|
|
bb6:
|
|
ret i32 42
|
|
bb7:
|
|
ret i32 927
|
|
}
|
|
|
|
; FP ops don't trap by default, so this is safe to hoist.
|
|
|
|
define i32 @tarp(i1 %c) {
|
|
; CHECK-LABEL: @tarp(
|
|
; CHECK-NEXT: bb9:
|
|
; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 fcmp oeq (float fdiv (float 3.000000e+00, float sitofp (i32 ptrtoint (i32* @G to i32) to float)), float 1.000000e+00), i32 42, i32 927
|
|
; CHECK-NEXT: [[MERGE:%.*]] = select i1 [[C:%.*]], i32 [[SPEC_SELECT]], i32 42
|
|
; CHECK-NEXT: ret i32 [[MERGE]]
|
|
;
|
|
br i1 %c, label %bb8, label %bb9
|
|
bb8:
|
|
br i1 fcmp oeq (float fdiv (float 3.0, float sitofp (i32 ptrtoint (i32* @G to i32) to float)), float 1.0), label %bb9, label %bb10
|
|
bb9:
|
|
ret i32 42
|
|
bb10:
|
|
ret i32 927
|
|
}
|