Address issues found by Duncan during post-commit review of r177856.

[oota-llvm.git] / test / Transforms / InstCombine / canonicalize_branch.ll

diff --git a/test/Transforms/InstCombine/canonicalize_branch.ll b/test/Transforms/InstCombine/canonicalize_branch.ll
index 032e2931887077ea634ae30cc88f2bc6a4e18367..869546d57dcd95a9cfac33b81516f7ff2066cdd8 100644 (file)
--- a/test/Transforms/InstCombine/canonicalize_branch.ll
+++ b/test/Transforms/InstCombine/canonicalize_branch.ll
@@ -1,28 +1,69 @@
-; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine | llvm-dis | \
-; RUN:    not grep {setne\|setle\|setge}
+; 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) {
+        %C = icmp eq i32 %X, %Y
+        br i1 %C, label %T, label %F, !prof !0
+
+; CHECK: @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) {
+        %C = icmp ne i32 %X, %Y
+        br i1 %C, label %T, label %F, !prof !1
+
+; CHECK: @test1
+; CHECK: %C = icmp eq i32 %X, %Y
+; CHECK: br i1 %C, label %F, label %T
 
-int %test1(uint %X, uint %Y) {
-       %C = setne uint %X, %Y
-       br bool %C, label %T, label %F
 T:
-       ret int 12
+        ret i32 12
 F:
-       ret int 123
+        ret i32 123
 }
 
-int %test2(uint %X, uint %Y) {
-       %C = setle uint %X, %Y
-       br bool %C, label %T, label %F
+define i32 @test2(i32 %X, i32 %Y) {
+        %C = icmp ule i32 %X, %Y
+        br i1 %C, label %T, label %F, !prof !2
+
+; CHECK: @test2
+; CHECK: %C = icmp ugt i32 %X, %Y
+; CHECK: br i1 %C, label %F, label %T
+
 T:
-       ret int 12
+        ret i32 12
 F:
-       ret int 123
+        ret i32 123
 }
-int %test3(uint %X, uint %Y) {
-       %C = setge uint %X, %Y
-       br bool %C, label %T, label %F
+
+define i32 @test3(i32 %X, i32 %Y) {
+        %C = icmp uge i32 %X, %Y
+        br i1 %C, label %T, label %F, !prof !3
+
+; CHECK: @test3
+; CHECK: %C = icmp ult i32 %X, %Y
+; CHECK: br i1 %C, label %F, label %T
+
 T:
-       ret int 12
+        ret i32 12
 F:
-       ret int 123
+        ret i32 123
 }
+
+!0 = metadata !{metadata !"branch_weights", i32 1, i32 2}
+!1 = metadata !{metadata !"branch_weights", i32 3, i32 4}
+!2 = metadata !{metadata !"branch_weights", i32 5, i32 6}
+!3 = metadata !{metadata !"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}