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| author | Uros Bizjak <uros@gcc.gnu.org> | 2017-02-21 19:29:57 +0100 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2017-02-21 19:29:57 +0100 |
| commit | a2b48844ed315cdceef32e22f15268eca0c71785 (patch) | |
| tree | d901bd6b97927a752cb588af33aa476c6ba5f3db | |
| parent | b7280ac2708e2a36337347de3c27e8fda914683e (diff) | |
| download | gcc-a2b48844ed315cdceef32e22f15268eca0c71785.zip gcc-a2b48844ed315cdceef32e22f15268eca0c71785.tar.gz gcc-a2b48844ed315cdceef32e22f15268eca0c71785.tar.bz2 | |
re PR rtl-optimization/79593 (Poor/Worse code generation for FPU on versions after 6)
PR target/79593
* config/i386/i386.md (standard_x87sse_constant_load splitter):
Use nonimmediate_operand instead of memory_operand for operand 1.
(float-extend standard_x87sse_constant_load splitter): Ditto.
testsuite/ChangeLog:
PR target/79593
* gcc.target/i386/pr79593.c: New test.
From-SVN: r245640
| -rw-r--r-- | gcc/config/i386/i386.md | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr79593.c | 17 |
2 files changed, 19 insertions, 2 deletions
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index cfbe0b0..23f2ea0 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -3660,7 +3660,7 @@ (define_split [(set (match_operand 0 "any_fp_register_operand") - (match_operand 1 "memory_operand"))] + (match_operand 1 "nonimmediate_operand"))] "reload_completed && (GET_MODE (operands[0]) == TFmode || GET_MODE (operands[0]) == XFmode @@ -3672,7 +3672,7 @@ (define_split [(set (match_operand 0 "any_fp_register_operand") - (float_extend (match_operand 1 "memory_operand")))] + (float_extend (match_operand 1 "nonimmediate_operand")))] "reload_completed && (GET_MODE (operands[0]) == TFmode || GET_MODE (operands[0]) == XFmode diff --git a/gcc/testsuite/gcc.target/i386/pr79593.c b/gcc/testsuite/gcc.target/i386/pr79593.c new file mode 100644 index 0000000..c116634 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr79593.c @@ -0,0 +1,17 @@ +/* PR target/79593 */ +/* { dg-do compile } */ +/* { dg-options "-Ofast -mfpmath=387" } */ + +extern float global_data[1024]; + +static long double MIN (long double a, long double b) { return a < b ? a : b; } +static long double MAX (long double a, long double b) { return a > b ? a : b; } + +float bar (void) +{ + long double delta = (global_data[0]); + + return (MIN (MAX (delta, 0.0l), 1.0l)); +} + +/* { dg-final { scan-assembler-not "fld\[ \t\]+%st" } } */ |