GCC Bugzilla – Attachment 42662 Details for
Bug 82981
[7 Regression] unnecessary __multi3 call for mips64r6 linux kernel
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[patch]
gcc8-pr82981-arm.patch
gcc8-pr82981-arm.patch (text/plain), 2.40 KB, created by
Jakub Jelinek
on 2017-11-20 15:46:25 UTC
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Description:
gcc8-pr82981-arm.patch
Filename:
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Creator:
Jakub Jelinek
Created:
2017-11-20 15:46:25 UTC
Size:
2.40 KB
patch
obsolete
>2017-11-20 Jakub Jelinek <jakub@redhat.com> > > PR target/82981 > * internal-fn.c (expand_mul_overflow): Use OPTAB_WIDEN instead of > OPTAB_DIRECT in calls to expand_simple_binop. > >--- gcc/internal-fn.c.jj 2017-11-15 09:54:30.000000000 +0100 >+++ gcc/internal-fn.c 2017-11-20 16:38:55.185145957 +0100 >@@ -1760,7 +1760,7 @@ expand_mul_overflow (location_t loc, tre > tem = convert_modes (mode, hmode, lopart, 1); > tem = expand_shift (LSHIFT_EXPR, mode, tem, hprec, NULL_RTX, 1); > tem = expand_simple_binop (mode, MINUS, loxhi, tem, NULL_RTX, >- 1, OPTAB_DIRECT); >+ 1, OPTAB_WIDEN); > emit_move_insn (loxhi, tem); > > emit_label (after_hipart_neg); >@@ -1774,7 +1774,7 @@ expand_mul_overflow (location_t loc, tre > profile_probability::even ()); > > tem = expand_simple_binop (mode, MINUS, loxhi, larger, NULL_RTX, >- 1, OPTAB_DIRECT); >+ 1, OPTAB_WIDEN); > emit_move_insn (loxhi, tem); > > emit_label (after_lopart_neg); >@@ -1783,7 +1783,7 @@ expand_mul_overflow (location_t loc, tre > /* loxhi += (uns) lo0xlo1 >> (bitsize / 2); */ > tem = expand_shift (RSHIFT_EXPR, mode, lo0xlo1, hprec, NULL_RTX, 1); > tem = expand_simple_binop (mode, PLUS, loxhi, tem, NULL_RTX, >- 1, OPTAB_DIRECT); >+ 1, OPTAB_WIDEN); > emit_move_insn (loxhi, tem); > > /* if (loxhi >> (bitsize / 2) >@@ -1810,7 +1810,7 @@ expand_mul_overflow (location_t loc, tre > convert_modes (hmode, mode, lo0xlo1, 1), 1); > > tem = expand_simple_binop (mode, IOR, loxhishifted, tem, res, >- 1, OPTAB_DIRECT); >+ 1, OPTAB_WIDEN); > if (tem != res) > emit_move_insn (res, tem); > emit_jump (done_label); >@@ -1835,7 +1835,7 @@ expand_mul_overflow (location_t loc, tre > if (!op0_medium_p) > { > tem = expand_simple_binop (hmode, PLUS, hipart0, const1_rtx, >- NULL_RTX, 1, OPTAB_DIRECT); >+ NULL_RTX, 1, OPTAB_WIDEN); > do_compare_rtx_and_jump (tem, const1_rtx, GTU, true, hmode, > NULL_RTX, NULL, do_error, > profile_probability::very_unlikely ()); >@@ -1844,7 +1844,7 @@ expand_mul_overflow (location_t loc, tre > if (!op1_medium_p) > { > tem = expand_simple_binop (hmode, PLUS, hipart1, const1_rtx, >- NULL_RTX, 1, OPTAB_DIRECT); >+ NULL_RTX, 1, OPTAB_WIDEN); > do_compare_rtx_and_jump (tem, const1_rtx, GTU, true, hmode, > NULL_RTX, NULL, do_error, > profile_probability::very_unlikely ());
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bug 82981
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