diff options
Diffstat (limited to 'meta/recipes-devtools/gcc/gcc-6.4/backport/0007-x86-Add-V-register-operand-modifier.patch')
| -rw-r--r-- | meta/recipes-devtools/gcc/gcc-6.4/backport/0007-x86-Add-V-register-operand-modifier.patch | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/meta/recipes-devtools/gcc/gcc-6.4/backport/0007-x86-Add-V-register-operand-modifier.patch b/meta/recipes-devtools/gcc/gcc-6.4/backport/0007-x86-Add-V-register-operand-modifier.patch new file mode 100644 index 0000000000..cec84fefb2 --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc-6.4/backport/0007-x86-Add-V-register-operand-modifier.patch @@ -0,0 +1,139 @@ +From 8f0efd692eb8db06d6c00b759c872bd2170b7f7b Mon Sep 17 00:00:00 2001 +From: "H.J. Lu" <hjl.tools@gmail.com> +Date: Sat, 6 Jan 2018 22:29:56 -0800 +Subject: [PATCH 07/12] x86: Add 'V' register operand modifier + +Add 'V', a special modifier which prints the name of the full integer +register without '%'. For + +extern void (*func_p) (void); + +void +foo (void) +{ + asm ("call __x86_indirect_thunk_%V0" : : "a" (func_p)); +} + +it generates: + +foo: + movq func_p(%rip), %rax + call __x86_indirect_thunk_rax + ret + +gcc/ + + Backport from mainline + 2018-01-14 H.J. Lu <hongjiu.lu@intel.com> + + * config/i386/i386.c (print_reg): Print the name of the full + integer register without '%'. + (ix86_print_operand): Handle 'V'. + * doc/extend.texi: Document 'V' modifier. + +gcc/testsuite/ + + Backport from mainline + 2018-01-14 H.J. Lu <hongjiu.lu@intel.com> + + * gcc.target/i386/indirect-thunk-register-4.c: New test. + +Upstream-Status: Pending + +Signed-off-by: Juro Bystricky <juro.bystricky@intel.com> + +--- + gcc/config/i386/i386.c | 13 ++++++++++++- + gcc/doc/extend.texi | 3 +++ + gcc/testsuite/gcc.target/i386/indirect-thunk-register-4.c | 13 +++++++++++++ + 3 files changed, 28 insertions(+), 1 deletion(-) + create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-register-4.c + +diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c +index 34e26a3..eeca7e5 100644 +--- a/gcc/config/i386/i386.c ++++ b/gcc/config/i386/i386.c +@@ -16869,6 +16869,7 @@ put_condition_code (enum rtx_code code, machine_mode mode, bool reverse, + If CODE is 'h', pretend the reg is the 'high' byte register. + If CODE is 'y', print "st(0)" instead of "st", if the reg is stack op. + If CODE is 'd', duplicate the operand for AVX instruction. ++ If CODE is 'V', print naked full integer register name without %. + */ + + void +@@ -16879,7 +16880,7 @@ print_reg (rtx x, int code, FILE *file) + unsigned int regno; + bool duplicated; + +- if (ASSEMBLER_DIALECT == ASM_ATT) ++ if (ASSEMBLER_DIALECT == ASM_ATT && code != 'V') + putc ('%', file); + + if (x == pc_rtx) +@@ -16922,6 +16923,14 @@ print_reg (rtx x, int code, FILE *file) + && regno != FPSR_REG + && regno != FPCR_REG); + ++ if (code == 'V') ++ { ++ if (GENERAL_REGNO_P (regno)) ++ msize = GET_MODE_SIZE (word_mode); ++ else ++ error ("'V' modifier on non-integer register"); ++ } ++ + duplicated = code == 'd' && TARGET_AVX; + + switch (msize) +@@ -17035,6 +17044,7 @@ print_reg (rtx x, int code, FILE *file) + & -- print some in-use local-dynamic symbol name. + H -- print a memory address offset by 8; used for sse high-parts + Y -- print condition for XOP pcom* instruction. ++ V -- print naked full integer register name without %. + + -- print a branch hint as 'cs' or 'ds' prefix + ; -- print a semicolon (after prefixes due to bug in older gas). + ~ -- print "i" if TARGET_AVX2, "f" otherwise. +@@ -17259,6 +17269,7 @@ ix86_print_operand (FILE *file, rtx x, int code) + case 'X': + case 'P': + case 'p': ++ case 'V': + break; + + case 's': +diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi +index 2cb6bd1..76ba1d4 100644 +--- a/gcc/doc/extend.texi ++++ b/gcc/doc/extend.texi +@@ -8511,6 +8511,9 @@ The table below shows the list of supported modifiers and their effects. + @tab @code{2} + @end multitable + ++@code{V} is a special modifier which prints the name of the full integer ++register without @code{%}. ++ + @anchor{x86floatingpointasmoperands} + @subsubsection x86 Floating-Point @code{asm} Operands + +diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-register-4.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-register-4.c +new file mode 100644 +index 0000000..f0cd9b7 +--- /dev/null ++++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-register-4.c +@@ -0,0 +1,13 @@ ++/* { dg-do compile } */ ++/* { dg-options "-O2 -mindirect-branch=keep -fno-pic" } */ ++ ++extern void (*func_p) (void); ++ ++void ++foo (void) ++{ ++ asm("call __x86_indirect_thunk_%V0" : : "a" (func_p)); ++} ++ ++/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_eax" { target ia32 } } } */ ++/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_rax" { target { ! ia32 } } } } */ +-- +2.7.4 + |