[libclc] Enable -fdiscard-value-names build flag to reduce bitcode size (llvm#149016)

wenju-he · SquallATF · commit 1e2f3f7d1b6c · 2025-12-04T10:47:25.000+08:00
The flag reduces nvptx64--nvidiacl.bc size from 10.6MB to 5.2MB.
diff --git a/libclc/CMakeLists.txt b/libclc/CMakeLists.txt
@@ -402,6 +402,7 @@ foreach( t ${LIBCLC_TARGETS_TO_BUILD} )
       -I${CMAKE_CURRENT_SOURCE_DIR}/clc/include
       # Error on undefined macros
       -Werror=undef
+      -fdiscard-value-names
     )
 
     if( NOT "${cpu}" STREQUAL "" )

Original file line number	Diff line number	Diff line change
`@@ -402,6 +402,7 @@ foreach( t ${LIBCLC_TARGETS_TO_BUILD} )`
`402`	`402`	`-I${CMAKE_CURRENT_SOURCE_DIR}/clc/include`
`403`	`403`	`# Error on undefined macros`
`404`	`404`	`-Werror=undef`
	`405`	`+ -fdiscard-value-names`
`405`	`406`	`)`
`406`	`407`
`407`	`408`	`if( NOT "${cpu}" STREQUAL "" )`