[SimplifyCFG] NFC, update Switch tests as a baseline.
Also add baseline tests to show effect of later patches.
There were a couple of regressions here that were never caught,
but my patch set that this is a preparation to will fix them.
This is the third attempt to land this patch.
Differential Revision: https://reviews.llvm.org/D61150
llvm-svn: 363319
diff --git a/llvm/test/Transforms/SimplifyCFG/switch-range-to-icmp.ll b/llvm/test/Transforms/SimplifyCFG/switch-range-to-icmp.ll
index a109b31..c0f6a43 100644
--- a/llvm/test/Transforms/SimplifyCFG/switch-range-to-icmp.ll
+++ b/llvm/test/Transforms/SimplifyCFG/switch-range-to-icmp.ll
@@ -1,18 +1,27 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt %s -simplifycfg -S | FileCheck %s
declare i32 @f(i32)
define i32 @basic(i32 %x) {
-; CHECK-LABEL: @basic
-; CHECK: x.off = add i32 %x, -5
-; CHECK: %switch = icmp ult i32 %x.off, 3
-; CHECK: br i1 %switch, label %a, label %default
+; CHECK-LABEL: @basic(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[X_OFF:%.*]] = add i32 [[X:%.*]], -5
+; CHECK-NEXT: [[SWITCH:%.*]] = icmp ult i32 [[X_OFF]], 3
+; CHECK-NEXT: br i1 [[SWITCH]], label [[A:%.*]], label [[DEFAULT:%.*]]
+; CHECK: default:
+; CHECK-NEXT: [[TMP0:%.*]] = call i32 @f(i32 0)
+; CHECK-NEXT: ret i32 [[TMP0]]
+; CHECK: a:
+; CHECK-NEXT: [[TMP1:%.*]] = call i32 @f(i32 1)
+; CHECK-NEXT: ret i32 [[TMP1]]
+;
entry:
switch i32 %x, label %default [
- i32 5, label %a
- i32 6, label %a
- i32 7, label %a
+ i32 5, label %a
+ i32 6, label %a
+ i32 7, label %a
]
default:
%0 = call i32 @f(i32 0)
@@ -24,20 +33,28 @@
define i32 @unreachable(i32 %x) {
-; CHECK-LABEL: @unreachable
-; CHECK: x.off = add i32 %x, -5
-; CHECK: %switch = icmp ult i32 %x.off, 3
-; CHECK: br i1 %switch, label %a, label %b
+; CHECK-LABEL: @unreachable(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[X_OFF:%.*]] = add i32 [[X:%.*]], -5
+; CHECK-NEXT: [[SWITCH:%.*]] = icmp ult i32 [[X_OFF]], 3
+; CHECK-NEXT: br i1 [[SWITCH]], label [[A:%.*]], label [[B:%.*]]
+; CHECK: a:
+; CHECK-NEXT: [[TMP0:%.*]] = call i32 @f(i32 0)
+; CHECK-NEXT: ret i32 [[TMP0]]
+; CHECK: b:
+; CHECK-NEXT: [[TMP1:%.*]] = call i32 @f(i32 1)
+; CHECK-NEXT: ret i32 [[TMP1]]
+;
entry:
switch i32 %x, label %unreachable [
- i32 5, label %a
- i32 6, label %a
- i32 7, label %a
- i32 10, label %b
- i32 20, label %b
- i32 30, label %b
- i32 40, label %b
+ i32 5, label %a
+ i32 6, label %a
+ i32 7, label %a
+ i32 10, label %b
+ i32 20, label %b
+ i32 30, label %b
+ i32 40, label %b
]
unreachable:
unreachable
@@ -51,20 +68,28 @@
define i32 @unreachable2(i32 %x) {
-; CHECK-LABEL: @unreachable2
-; CHECK: x.off = add i32 %x, -5
-; CHECK: %switch = icmp ult i32 %x.off, 3
-; CHECK: br i1 %switch, label %a, label %b
+; CHECK-LABEL: @unreachable2(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[X_OFF:%.*]] = add i32 [[X:%.*]], -5
+; CHECK-NEXT: [[SWITCH:%.*]] = icmp ult i32 [[X_OFF]], 3
+; CHECK-NEXT: br i1 [[SWITCH]], label [[A:%.*]], label [[B:%.*]]
+; CHECK: a:
+; CHECK-NEXT: [[TMP0:%.*]] = call i32 @f(i32 0)
+; CHECK-NEXT: ret i32 [[TMP0]]
+; CHECK: b:
+; CHECK-NEXT: [[TMP1:%.*]] = call i32 @f(i32 1)
+; CHECK-NEXT: ret i32 [[TMP1]]
+;
entry:
; Note: folding the most popular case destination into the default
; would prevent switch-to-icmp here.
switch i32 %x, label %unreachable [
- i32 5, label %a
- i32 6, label %a
- i32 7, label %a
- i32 10, label %b
- i32 20, label %b
+ i32 5, label %a
+ i32 6, label %a
+ i32 7, label %a
+ i32 10, label %b
+ i32 20, label %b
]
unreachable:
unreachable