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Fix MIPS call-clobbered-*.c tests

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Jeff pointed out that gcc.target/mips/call-clobbered-4.c started
failing after the function-abi series.  This is because IRA used
to treat partly call-clobbered registers as hard conflicts and
so wouldn't consider them for -fcaller-saves.  Now that we treat
call clobbers the same way regardless of where they come from,
we can use $f21 as a caller-save register.  This in turn means
that -Os is no longer a special case in call-clobbered-3.c.

(The new code is the same size as the old code.)

2019-10-02  Richard Sandiford  <richard.sandiford@arm.com>

gcc/testsuite/
	* gcc.target/mips/call-clobbered-3.c: Remove skip for -Os.
	* gcc.target/mips/call-clobbered-4.c: Delete.

From-SVN: r276456
This commit is contained in:
Richard Sandiford 2019-10-02 13:11:45 +00:00 committed by Richard Sandiford
parent 3187c8a501
commit 4bdb8c3dca
3 changed files with 5 additions and 25 deletions
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5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2019-10-02 Richard Sandiford <richard.sandiford@arm.com>
* gcc.target/mips/call-clobbered-3.c: Remove skip for -Os.
* gcc.target/mips/call-clobbered-4.c: Delete.
2019-10-02 Tobias Burnus <tobias@codesourcery.com>
* gfortran.dg/gomp/is_device_ptr-1.f90: New.

2
gcc/testsuite/gcc.target/mips/call-clobbered-3.c
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@ -1,7 +1,5 @@
/* Check that we handle call-clobbered FPRs correctly. */
/* { dg-skip-if "code quality test" { *-*-* } { "-O0" } { "" } } */
/* Refer to call-clobbered-4.c to see the expected output from -Os builds. */
/* { dg-skip-if "uses callee-saved GPR" { *-*-* } { "-Os" } { "" } } */
/* { dg-options "-mabi=32 -modd-spreg -mfpxx -ffixed-f0 -ffixed-f1 -ffixed-f2 -ffixed-f3 -ffixed-f4 -ffixed-f5 -ffixed-f6 -ffixed-f7 -ffixed-f8 -ffixed-f9 -ffixed-f10 -ffixed-f11 -ffixed-f12 -ffixed-f13 -ffixed-f14 -ffixed-f15 -ffixed-f16 -ffixed-f17 -ffixed-f18 -ffixed-f19 -ffixed-f20 -ffixed-f22 -ffixed-f24 -ffixed-f26 -ffixed-f28 -ffixed-f30" } */
void bar (void);

23
gcc/testsuite/gcc.target/mips/call-clobbered-4.c
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@ -1,23 +0,0 @@
/* Check that we handle call-clobbered FPRs correctly.
This test differs from call-clobbered-3.c because when optimising for size
a callee-saved GPR is used for 'b' to cross the call. */
/* { dg-skip-if "code quality test" { *-*-* } { "*" } { "-Os" } } */
/* { dg-options "-mabi=32 -modd-spreg -mfpxx -ffixed-f0 -ffixed-f1 -ffixed-f2 -ffixed-f3 -ffixed-f4 -ffixed-f5 -ffixed-f6 -ffixed-f7 -ffixed-f8 -ffixed-f9 -ffixed-f10 -ffixed-f11 -ffixed-f12 -ffixed-f13 -ffixed-f14 -ffixed-f15 -ffixed-f16 -ffixed-f17 -ffixed-f18 -ffixed-f19 -ffixed-f20 -ffixed-f22 -ffixed-f24 -ffixed-f26 -ffixed-f28 -ffixed-f30" } */
void bar (void);
float a;
float
foo ()
{
float b = a + 1.0f;
bar();
return b;
}
/* { dg-final { scan-assembler-times "lwc1" 4 } } */
/* { dg-final { scan-assembler-times "swc1" 2 } } */
/* { dg-final { scan-assembler-times "mtc" 1 } } */
/* { dg-final { scan-assembler-times "mfc" 1 } } */
/* { dg-final { scan-assembler-not "mthc" } } */
/* { dg-final { scan-assembler-not "mfhc" } } */
/* { dg-final { scan-assembler-not "ldc1" } } */
/* { dg-final { scan-assembler-not "sdc1" } } */