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| author | Serge Guelton <sguelton@quarkslab.com> | 2018-01-05 19:41:19 +0000 |
|---|---|---|
| committer | Serge Guelton <sguelton@quarkslab.com> | 2018-01-05 19:41:19 +0000 |
| commit | 4c975578b42a3adcfa5f7d08d67feff589f03398 (patch) | |
| tree | 1f801ff57ceaee8fe68853241b414a6a9c9f94de /llvm/test/Bitcode | |
| parent | 9e52e50ac0afc182a899706f436934b570eaf09b (diff) | |
| download | bcm5719-llvm-4c975578b42a3adcfa5f7d08d67feff589f03398.tar.gz bcm5719-llvm-4c975578b42a3adcfa5f7d08d67feff589f03398.zip | |
Limit size of non-GlobalValue name
Otherwise, in some extreme test case, very long names are created and the
compiler consumes large amount of memory. Size limit is set to a relatively
high value not to disturb debugging.
Compiler flag -non-global-value-max-name-size=<value> can be used to customize
the size.
Differential Revision: https://reviews.llvm.org/D41296
llvm-svn: 321886
Diffstat (limited to 'llvm/test/Bitcode')
| -rw-r--r-- | llvm/test/Bitcode/value-with-long-name.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/llvm/test/Bitcode/value-with-long-name.ll b/llvm/test/Bitcode/value-with-long-name.ll new file mode 100644 index 00000000000..1ca5d133e09 --- /dev/null +++ b/llvm/test/Bitcode/value-with-long-name.ll @@ -0,0 +1,18 @@ +; Check the size of generated variable when no option is set +; RUN: opt -S %s -O2 -o - | FileCheck -check-prefix=CHECK-LONG %s +; CHECK-LONG: %{{[a-z]{4}[a-z]+}} + +; Then check we correctly cap the size of newly generated non-global values name +; Force the size to be small so that the check works on release and debug build +; RUN: opt -S %s -O2 -o - -non-global-value-max-name-size=0 | FileCheck -check-prefix=CHECK-SHORT %s +; RUN: opt -S %s -O2 -o - -non-global-value-max-name-size=1 | FileCheck -check-prefix=CHECK-SHORT %s +; CHECK-SHORT-NOT: %{{[a-z][a-z]+}} + +define i32 @f(i32 %a, i32 %b) { + %c = add i32 %a, %b + %d = add i32 %c, %a + %e = add i32 %d, %b + ret i32 %e +} + + |
