[llvm] ca7563b - [Attributor][NFC] Add test from PR49606

[Johannes Doerfert via llvm-commits]

Author: Johannes Doerfert
Date: 2021-06-18T01:07:52-05:00
New Revision: ca7563bb02689a7145a7348d8b7a9676189df296

URL: https://github.com/llvm/llvm-project/commit/ca7563bb02689a7145a7348d8b7a9676189df296
DIFF: https://github.com/llvm/llvm-project/commit/ca7563bb02689a7145a7348d8b7a9676189df296.diff

LOG: [Attributor][NFC] Add test from PR49606

It is not clear to me how we fixed this, I reverted a few candidates but
I couldn't make the test fail. Still worth having it in our regression
suite.

Added: 
    llvm/test/Transforms/Attributor/cgscc_bugs.ll

Modified: 
    

Removed: 
    


################################################################################
diff  --git a/llvm/test/Transforms/Attributor/cgscc_bugs.ll b/llvm/test/Transforms/Attributor/cgscc_bugs.ll
new file mode 100644
index 000000000000..dbd723ff8dd3
--- /dev/null
+++ b/llvm/test/Transforms/Attributor/cgscc_bugs.ll
@@ -0,0 +1,106 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals
+; RUN: opt -attributor -enable-new-pm=0 -attributor-manifest-internal  -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=10 -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_CGSCC_NPM,NOT_CGSCC_OPM,NOT_TUNIT_NPM,IS__TUNIT____,IS________OPM,IS__TUNIT_OPM
+; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal  -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=10 -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_CGSCC_OPM,NOT_CGSCC_NPM,NOT_TUNIT_OPM,IS__TUNIT____,IS________NPM,IS__TUNIT_NPM
+; RUN: opt -attributor-cgscc -enable-new-pm=0 -attributor-manifest-internal  -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_TUNIT_NPM,NOT_TUNIT_OPM,NOT_CGSCC_NPM,IS__CGSCC____,IS________OPM,IS__CGSCC_OPM
+; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal  -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_TUNIT_NPM,NOT_TUNIT_OPM,NOT_CGSCC_OPM,IS__CGSCC____,IS________NPM,IS__CGSCC_NPM
+
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+
+%0 = type { i32, %1, %2* }
+%1 = type { i32 }
+%2 = type opaque
+
+define hidden %0* @f1(i64 %0, i64 %1) {
+; CHECK-LABEL: define {{[^@]+}}@f1
+; CHECK-SAME: (i64 [[TMP0:%.*]], i64 [[TMP1:%.*]]) {
+; CHECK-NEXT:    [[TMP3:%.*]] = call { %0*, i64 } @f3(i64 [[TMP0]])
+; CHECK-NEXT:    ret %0* undef
+;
+  %3 = call { %0*, i64 } @f3(i64 %0)
+  ret %0* undef
+}
+
+define linkonce_odr hidden { %0*, i64 } @f3(i64 %0) align 2 {
+; CHECK-LABEL: define {{[^@]+}}@f3
+; CHECK-SAME: (i64 [[TMP0:%.*]]) align 2 {
+; CHECK-NEXT:    [[TMP2:%.*]] = call i32 @f4()
+; CHECK-NEXT:    [[TMP3:%.*]] = zext i32 [[TMP2]] to i64
+; CHECK-NEXT:    call void @f5(i64 [[TMP3]], i64 [[TMP0]]) #[[ATTR0:[0-9]+]]
+; CHECK-NEXT:    ret { %0*, i64 } undef
+;
+  %2 = call i32 @f4()
+  %3 = zext i32 %2 to i64
+  call void @f5(i64 %3, i64 %0)
+  ret { %0*, i64 } undef
+}
+
+define linkonce_odr hidden i32 @f4() align 2 {
+; CHECK-LABEL: define {{[^@]+}}@f4() align 2 {
+; CHECK-NEXT:    ret i32 16
+;
+  ret i32 16
+}
+
+define internal void @f5(i64 %0, i64 %1) {
+; CHECK: Function Attrs: nounwind
+; CHECK-LABEL: define {{[^@]+}}@f5
+; CHECK-SAME: (i64 [[TMP0:%.*]], i64 [[TMP1:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:    br label [[TMP3:%.*]]
+; CHECK:       3:
+; CHECK-NEXT:    call void @f6(i64 [[TMP0]]) #[[ATTR0]]
+; CHECK-NEXT:    [[TMP4:%.*]] = icmp sgt i64 [[TMP1]], [[TMP0]]
+; CHECK-NEXT:    br i1 [[TMP4]], label [[TMP5:%.*]], label [[TMP6:%.*]]
+; CHECK:       5:
+; CHECK-NEXT:    ret void
+; CHECK:       6:
+; CHECK-NEXT:    call void @f5(i64 [[TMP0]], i64 [[TMP1]]) #[[ATTR0]]
+; CHECK-NEXT:    br label [[TMP3]]
+;
+  br label %3
+
+3:                                                ; preds = %6, %2
+  call void @f6(i64 %0)
+  %4 = icmp sgt i64 %1, %0
+  br i1 %4, label %5, label %6
+
+5:                                                ; preds = %3
+  ret void
+
+6:                                                ; preds = %3
+  call void @f5(i64 %0, i64 %1)
+  br label %3
+}
+
+define internal void @f6(i64 %0) {
+; CHECK: Function Attrs: nounwind
+; CHECK-LABEL: define {{[^@]+}}@f6
+; CHECK-SAME: (i64 [[TMP0:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp sgt i64 [[TMP0]], 0
+; CHECK-NEXT:    br i1 [[TMP2]], label [[TMP3:%.*]], label [[TMP4:%.*]]
+; CHECK:       3:
+; CHECK-NEXT:    call void @llvm.trap() #[[ATTR2:[0-9]+]]
+; CHECK-NEXT:    unreachable
+; CHECK:       4:
+; CHECK-NEXT:    ret void
+;
+  %2 = icmp sgt i64 %0, 0
+  br i1 %2, label %3, label %4
+
+3:                                                ; preds = %1
+  call void @llvm.trap()
+  ret void
+
+4:                                                ; preds = %1
+  ret void
+}
+
+; Function Attrs: cold noreturn nounwind
+declare void @llvm.trap() #0
+
+attributes #0 = { cold noreturn nounwind }
+
+;.
+; CHECK: attributes #[[ATTR0]] = { nounwind }
+; CHECK: attributes #[[ATTR1:[0-9]+]] = { cold noreturn nounwind }
+; CHECK: attributes #[[ATTR2]] = { noreturn }
+;.