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Remove '*' from movsi/di/ti patterns

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Remove the remaining uses of '*' from the movsi/di/ti patterns.
Using '*' in alternatives is typically incorrect at it tells the register
allocator to ignore those alternatives.  So remove these from all the
integer move patterns.  This removes unnecessary int to float moves, for
example gcc.target/aarch64/pr62178.c no longer generates a redundant fmov
since the w = m variant is now allowed.

    gcc/
	* config/aarch64/aarch64.md (movsi_aarch64): Remove all '*'.
	(movdi_aarch64): Likewise.
	(movti_aarch64): Likewise.

From-SVN: r252033
This commit is contained in:
Wilco Dijkstra 2017-09-12 16:27:47 +00:00
parent 7d843469d5
commit ff76f0b5f6
2 changed files with 21 additions and 15 deletions
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24
gcc/ChangeLog
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@ -1,4 +1,10 @@
2017-09-02 Simon Wright <simon@pushface.org>
2017-09-12 Wilco Dijkstra <wdijkstr@arm.com>
* config/aarch64/aarch64.md (movsi_aarch64): Remove all '*'.
(movdi_aarch64): Likewise.
(movti_aarch64): Likewise.
2017-09-12 Simon Wright <simon@pushface.org>
PR target/80204
* config/darwin-driver.c (darwin_find_version_from_kernel): Eliminate
@ -15,16 +21,16 @@
2017-09-12 Carl Love <cel@us.ibm.com>
* config/rs6000/altivec.md (vec_widen_umult_even_v4si,
* config/rs6000/altivec.md (vec_widen_umult_even_v4si,
vec_widen_smult_even_v4si): Add define expands for vmuleuw, vmulesw,
vmulouw, vmulosw.
* config/rs6000/rs6000-builtin.def (VMLEUW, VMULESW, VMULOUW,
VMULOSW): Add definitions.
* config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Add
ALTIVEC_BUILTIN_VMULESW, ALTIVEC_BUILTIN_VMULEUW,
ALTIVEC_BUILTIN_VMULOSW, ALTIVEC_BUILTIN_VMULOUW entries.
* config/rs6000/rs6000.c (rs6000_gimple_fold_builtin,
builtin_function_type): Add ALTIVEC_BUILTIN_* case statements.
* config/rs6000/rs6000-builtin.def (VMLEUW, VMULESW, VMULOUW,
VMULOSW): Add definitions.
* config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Add
ALTIVEC_BUILTIN_VMULESW, ALTIVEC_BUILTIN_VMULEUW,
ALTIVEC_BUILTIN_VMULOSW, ALTIVEC_BUILTIN_VMULOUW entries.
* config/rs6000/rs6000.c (rs6000_gimple_fold_builtin,
builtin_function_type): Add ALTIVEC_BUILTIN_* case statements.
2017-09-12 James Greenhalgh <james.greenhalgh@arm.com>

12
gcc/config/aarch64/aarch64.md
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@ -932,8 +932,8 @@
)
(define_insn_and_split "*movsi_aarch64"
[(set (match_operand:SI 0 "nonimmediate_operand" "=r,k,r,r,r,r,*w,m, m,r,r ,*w, r,*w,w")
(match_operand:SI 1 "aarch64_mov_operand" " r,r,k,M,n,m, m,rZ,*w,Usa,Ush,rZ,w,*w,Ds"))]
[(set (match_operand:SI 0 "nonimmediate_operand" "=r,k,r,r,r,r,w, m, m, r, r, w,r,w, w")
(match_operand:SI 1 "aarch64_mov_operand" " r,r,k,M,n,m,m,rZ,*w,Usa,Ush,rZ,w,w,Ds"))]
"(register_operand (operands[0], SImode)
|| aarch64_reg_or_zero (operands[1], SImode))"
"@
@ -966,8 +966,8 @@
)
(define_insn_and_split "*movdi_aarch64"
[(set (match_operand:DI 0 "nonimmediate_operand" "=r,k,r,r,r,r,r,*w,m, m,r,r, *w,r,*w,w")
(match_operand:DI 1 "aarch64_mov_operand" " r,r,k,N,M,n,m, m,rZ,*w,Usa,Ush,rZ,w,*w,Dd"))]
[(set (match_operand:DI 0 "nonimmediate_operand" "=r,k,r,r,r,r,r,w, m,m, r, r, w,r,w, w")
(match_operand:DI 1 "aarch64_mov_operand" " r,r,k,N,M,n,m,m,rZ,w,Usa,Ush,rZ,w,w,Dd"))]
"(register_operand (operands[0], DImode)
|| aarch64_reg_or_zero (operands[1], DImode))"
"@
@ -1023,9 +1023,9 @@
(define_insn "*movti_aarch64"
[(set (match_operand:TI 0
"nonimmediate_operand" "=r, *w,r ,*w,r,m,m,*w,m")
"nonimmediate_operand" "=r, w,r,w,r,m,m,w,m")
(match_operand:TI 1
"aarch64_movti_operand" " rn,r ,*w,*w,m,r,Z, m,*w"))]
"aarch64_movti_operand" " rn,r,w,w,m,r,Z,m,w"))]
"(register_operand (operands[0], TImode)
|| aarch64_reg_or_zero (operands[1], TImode))"
"@