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| author | Jan Vesely <jan.vesely@rutgers.edu> | 2014-08-13 20:31:53 +0000 |
|---|---|---|
| committer | Jan Vesely <jan.vesely@rutgers.edu> | 2014-08-13 20:31:53 +0000 |
| commit | 0cd3ec6cfa8c191efb4d6b517bc0b251107b54e7 (patch) | |
| tree | b3509a454761ad3ce52f1231c3200567994542e9 /llvm/test/Transforms/Util | |
| parent | 5a956d49f7515694a1b3777e2b372e11e9ff0198 (diff) | |
| download | bcm5719-llvm-0cd3ec6cfa8c191efb4d6b517bc0b251107b54e7.tar.gz bcm5719-llvm-0cd3ec6cfa8c191efb4d6b517bc0b251107b54e7.zip | |
utils: Fix segfault in flattencfg
v2: continue iterating through the rest of the bb
use for loop
v3: initialize FlattenCFG pass in ScalarOps
add test
v4: split off initializing flattencfg to a separate patch
add comment
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
llvm-svn: 215574
Diffstat (limited to 'llvm/test/Transforms/Util')
| -rw-r--r-- | llvm/test/Transforms/Util/flattencfg.ll | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/llvm/test/Transforms/Util/flattencfg.ll b/llvm/test/Transforms/Util/flattencfg.ll new file mode 100644 index 00000000000..4fcb77ab023 --- /dev/null +++ b/llvm/test/Transforms/Util/flattencfg.ll @@ -0,0 +1,26 @@ +; RUN: opt -flattencfg -S < %s | FileCheck %s + + +; This test checks whether the pass completes without a crash. +; The code is not transformed in any way +; +; CHECK-LABEL: @test_not_crash +define void @test_not_crash(i32 %in_a) #0 { +entry: + %cmp0 = icmp eq i32 %in_a, -1 + %cmp1 = icmp ne i32 %in_a, 0 + %cond0 = and i1 %cmp0, %cmp1 + br i1 %cond0, label %b0, label %b1 + +b0: ; preds = %entry + %cmp2 = icmp eq i32 %in_a, 0 + %cmp3 = icmp ne i32 %in_a, 1 + %cond1 = or i1 %cmp2, %cmp3 + br i1 %cond1, label %exit, label %b1 + +b1: ; preds = %entry, %b0 + br label %exit + +exit: ; preds = %entry, %b0, %b1 + ret void +} |
