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llvm-mirror/test/Bitcode/value-with-long-name.ll
Serge Guelton 567d46dc34 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
2018-01-05 19:41:19 +00:00

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LLVM

; 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
}