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[InstCombine] auto-generate better checks; NFC

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llvm-svn: 303203
This commit is contained in:
Sanjay Patel 2017-05-16 20:09:32 +00:00
parent 2eecd88090
commit 95166c2c5b
1 changed files with 55 additions and 40 deletions
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63
test/Transforms/InstCombine/canonicalize_branch.ll
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@ -1,56 +1,69 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s
; Test an already canonical branch to make sure we don't flip those.
define i32 @test0(i32 %X, i32 %Y) {
define i32 @eq(i32 %X, i32 %Y) {
; CHECK-LABEL: @eq(
; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]], !prof !0
; CHECK: T:
; CHECK-NEXT: ret i32 12
; CHECK: F:
; CHECK-NEXT: ret i32 123
;
%C = icmp eq i32 %X, %Y
br i1 %C, label %T, label %F, !prof !0
; CHECK-LABEL: @test0(
; CHECK: %C = icmp eq i32 %X, %Y
; CHECK: br i1 %C, label %T, label %F
T:
ret i32 12
F:
ret i32 123
}
define i32 @test1(i32 %X, i32 %Y) {
define i32 @ne(i32 %X, i32 %Y) {
; CHECK-LABEL: @ne(
; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: br i1 [[C]], label [[F:%.*]], label [[T:%.*]], !prof !1
; CHECK: T:
; CHECK-NEXT: ret i32 12
; CHECK: F:
; CHECK-NEXT: ret i32 123
;
%C = icmp ne i32 %X, %Y
br i1 %C, label %T, label %F, !prof !1
; CHECK-LABEL: @test1(
; CHECK: %C = icmp eq i32 %X, %Y
; CHECK: br i1 %C, label %F, label %T
T:
ret i32 12
F:
ret i32 123
}
define i32 @test2(i32 %X, i32 %Y) {
define i32 @ule(i32 %X, i32 %Y) {
; CHECK-LABEL: @ule(
; CHECK-NEXT: [[C:%.*]] = icmp ugt i32 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: br i1 [[C]], label [[F:%.*]], label [[T:%.*]], !prof !2
; CHECK: T:
; CHECK-NEXT: ret i32 12
; CHECK: F:
; CHECK-NEXT: ret i32 123
;
%C = icmp ule i32 %X, %Y
br i1 %C, label %T, label %F, !prof !2
; CHECK-LABEL: @test2(
; CHECK: %C = icmp ugt i32 %X, %Y
; CHECK: br i1 %C, label %F, label %T
T:
ret i32 12
F:
ret i32 123
}
define i32 @test3(i32 %X, i32 %Y) {
define i32 @uge(i32 %X, i32 %Y) {
; CHECK-LABEL: @uge(
; CHECK-NEXT: [[C:%.*]] = icmp ult i32 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: br i1 [[C]], label [[F:%.*]], label [[T:%.*]], !prof !3
; CHECK: T:
; CHECK-NEXT: ret i32 12
; CHECK: F:
; CHECK-NEXT: ret i32 123
;
%C = icmp uge i32 %X, %Y
br i1 %C, label %T, label %F, !prof !3
; CHECK-LABEL: @test3(
; CHECK: %C = icmp ult i32 %X, %Y
; CHECK: br i1 %C, label %F, label %T
T:
ret i32 12
F:
@ -61,9 +74,11 @@ F:
!1 = !{!"branch_weights", i32 3, i32 4}
!2 = !{!"branch_weights", i32 5, i32 6}
!3 = !{!"branch_weights", i32 7, i32 8}
; Base case shouldn't change.
; CHECK: !0 = {{.*}} i32 1, i32 2}
; Ensure that the branch metadata is reversed to match the reversals above.
; CHECK: !1 = {{.*}} i32 4, i32 3}
; CHECK: !2 = {{.*}} i32 6, i32 5}
; CHECK: !3 = {{.*}} i32 8, i32 7}