49 lines
1.6 KiB
LLVM
49 lines
1.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
|
|
; RUN: opt -S -passes=loop-fusion < %s | FileCheck %s
|
|
|
|
define void @sink_preheader(i32 %N) {
|
|
; CHECK-LABEL: define void @sink_preheader(
|
|
; CHECK-SAME: i32 [[N:%.*]]) {
|
|
; CHECK-NEXT: [[PRE1:.*]]:
|
|
; CHECK-NEXT: br label %[[BODY1:.*]]
|
|
; CHECK: [[BODY1]]:
|
|
; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], %[[BODY1]] ], [ 0, %[[PRE1]] ]
|
|
; CHECK-NEXT: [[I2:%.*]] = phi i32 [ [[I_NEXT2:%.*]], %[[BODY1]] ], [ 0, %[[PRE1]] ]
|
|
; CHECK-NEXT: [[I_NEXT]] = add i32 1, [[I]]
|
|
; CHECK-NEXT: [[COND:%.*]] = icmp ne i32 [[I]], [[N]]
|
|
; CHECK-NEXT: [[BARRIER:%.*]] = add i32 1, [[N]]
|
|
; CHECK-NEXT: [[I_NEXT2]] = add i32 1, [[I2]]
|
|
; CHECK-NEXT: [[COND2:%.*]] = icmp ne i32 [[I2]], [[N]]
|
|
; CHECK-NEXT: br i1 [[COND2]], label %[[BODY1]], label %[[EXIT:.*]]
|
|
; CHECK: [[EXIT]]:
|
|
; CHECK-NEXT: [[SINKME:%.*]] = add i32 1, [[BARRIER]]
|
|
; CHECK-NEXT: [[SINKME2:%.*]] = add i32 1, [[BARRIER]]
|
|
; CHECK-NEXT: [[SINKME3:%.*]] = add i32 1, [[SINKME2]]
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
pre1:
|
|
br label %body1
|
|
|
|
body1: ; preds = %pre1, %body1
|
|
%i = phi i32 [%i_next, %body1], [0, %pre1]
|
|
%i_next = add i32 1, %i
|
|
%cond = icmp ne i32 %i, %N
|
|
%barrier = add i32 1, %N
|
|
br i1 %cond, label %body1, label %pre2
|
|
|
|
pre2:
|
|
%sinkme = add i32 1, %barrier
|
|
%sinkme2 = add i32 1, %barrier
|
|
%sinkme3 = add i32 1, %sinkme2
|
|
br label %body2
|
|
|
|
body2: ; preds = %pre2, %body2
|
|
%i2 = phi i32 [%i_next2, %body2], [0, %pre2]
|
|
%i_next2 = add i32 1, %i2
|
|
%cond2 = icmp ne i32 %i2, %N
|
|
br i1 %cond2, label %body2, label %exit
|
|
|
|
exit:
|
|
ret void
|
|
}
|