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[builtins] Add support for single-precision-only-FPU ARM targets.

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This patch enables building compiler-rt builtins for ARM targets that
only support single-precision floating point instructions (e.g., those
with -mfpu=fpv4-sp-d16).

This fixes PR42838

Differential Revision: https://reviews.llvm.org/D90698
This commit is contained in:
Zhuojia Shen 2020-11-12 14:44:54 +00:00 committed by Peter Smith
parent f79b483385
commit 0c0eeb78eb
1 changed files with 30 additions and 18 deletions
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48
compiler-rt/lib/builtins/CMakeLists.txt
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@ -426,40 +426,42 @@ set(arm_Thumb1_SjLj_EH_SOURCES
arm/restore_vfp_d8_d15_regs.S
arm/save_vfp_d8_d15_regs.S
)
set(arm_Thumb1_VFPv2_SOURCES
set(arm_Thumb1_VFPv2_DP_SOURCES
arm/adddf3vfp.S
arm/addsf3vfp.S
arm/divdf3vfp.S
arm/divsf3vfp.S
arm/eqdf2vfp.S
arm/eqsf2vfp.S
arm/extendsfdf2vfp.S
arm/fixdfsivfp.S
arm/fixsfsivfp.S
arm/fixunsdfsivfp.S
arm/fixunssfsivfp.S
arm/floatsidfvfp.S
arm/floatsisfvfp.S
arm/floatunssidfvfp.S
arm/floatunssisfvfp.S
arm/gedf2vfp.S
arm/gesf2vfp.S
arm/gtdf2vfp.S
arm/gtsf2vfp.S
arm/ledf2vfp.S
arm/lesf2vfp.S
arm/ltdf2vfp.S
arm/ltsf2vfp.S
arm/muldf3vfp.S
arm/mulsf3vfp.S
arm/nedf2vfp.S
arm/negdf2vfp.S
arm/negsf2vfp.S
arm/nesf2vfp.S
arm/subdf3vfp.S
arm/subsf3vfp.S
arm/truncdfsf2vfp.S
arm/unorddf2vfp.S
)
set(arm_Thumb1_VFPv2_SP_SOURCES
arm/addsf3vfp.S
arm/divsf3vfp.S
arm/eqsf2vfp.S
arm/fixsfsivfp.S
arm/fixunssfsivfp.S
arm/floatsisfvfp.S
arm/floatunssisfvfp.S
arm/gesf2vfp.S
arm/gtsf2vfp.S
arm/lesf2vfp.S
arm/ltsf2vfp.S
arm/mulsf3vfp.S
arm/negsf2vfp.S
arm/nesf2vfp.S
arm/subsf3vfp.S
arm/unordsf2vfp.S
)
set(arm_Thumb1_icache_SOURCES
@ -468,7 +470,8 @@ set(arm_Thumb1_icache_SOURCES
set(arm_Thumb1_SOURCES
${arm_Thumb1_JT_SOURCES}
${arm_Thumb1_SjLj_EH_SOURCES}
${arm_Thumb1_VFPv2_SOURCES}
${arm_Thumb1_VFPv2_DP_SOURCES}
${arm_Thumb1_VFPv2_SP_SOURCES}
${arm_Thumb1_icache_SOURCES}
)
@ -655,7 +658,16 @@ else ()
string(REPLACE ";" " " _TARGET_${arch}_CFLAGS "${TARGET_${arch}_CFLAGS}")
check_compile_definition(__VFP_FP__ "${CMAKE_C_FLAGS} ${_TARGET_${arch}_CFLAGS}" COMPILER_RT_HAS_${arch}_VFP)
if(NOT COMPILER_RT_HAS_${arch}_VFP)
list(REMOVE_ITEM ${arch}_SOURCES ${arm_Thumb1_VFPv2_SOURCES} ${arm_Thumb1_SjLj_EH_SOURCES})
list(REMOVE_ITEM ${arch}_SOURCES ${arm_Thumb1_VFPv2_DP_SOURCES} ${arm_Thumb1_VFPv2_SP_SOURCES} ${arm_Thumb1_SjLj_EH_SOURCES})
else()
# Exclude any double-precision builtins if VFP is single-precision-only
check_c_source_compiles("#if !(__ARM_FP & 0x8)
#error No double-precision support!
#endif
int main() { return 0; }" COMPILER_RT_HAS_${arch}_VFP_DP)
if(NOT COMPILER_RT_HAS_${arch}_VFP_DP)
list(REMOVE_ITEM ${arch}_SOURCES ${arm_Thumb1_VFPv2_DP_SOURCES})
endif()
endif()
endif()