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| author | kenner <kenner@138bc75d-0d04-0410-961f-82ee72b054a4> | 1993-09-07 18:54:27 +0000 |
|---|---|---|
| committer | kenner <kenner@138bc75d-0d04-0410-961f-82ee72b054a4> | 1993-09-07 18:54:27 +0000 |
| commit | 303f6c6cf2914e84264e851823a1c7bdc3e2cf85 (patch) | |
| tree | e7d5d60bfede44032d4a54cd870f255c7223f331 /gcc/optabs.c | |
| parent | 48db8574a2f3b5b6dbb5a23d14a1156d32df903b (diff) | |
| download | gcc-303f6c6cf2914e84264e851823a1c7bdc3e2cf85.tar.gz | |
(expand_binop): Must always widen second operand of shift.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@5276 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/optabs.c')
| -rw-r--r-- | gcc/optabs.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c index cc742a40518..801b9456aee 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -526,7 +526,12 @@ expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods) no_extend = 1; xop0 = widen_operand (xop0, wider_mode, unsignedp, no_extend); - xop1 = widen_operand (xop1, wider_mode, unsignedp, no_extend); + + /* The second operand of a shift must always be extended. */ + xop1 = widen_operand (xop1, wider_mode, unsignedp, + no_extend && binoptab != ashl_optab + && binoptab != lshl_optab); + temp = expand_binop (wider_mode, binoptab, xop0, xop1, NULL_RTX, unsignedp, OPTAB_DIRECT); if (temp) @@ -1419,7 +1424,11 @@ expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods) no_extend = 1; xop0 = widen_operand (xop0, wider_mode, unsignedp, no_extend); - xop1 = widen_operand (xop1, wider_mode, unsignedp, no_extend); + + /* The second operand of a shift must always be extended. */ + xop1 = widen_operand (xop1, wider_mode, unsignedp, + no_extend && binoptab != ashl_optab + && binoptab != lshl_optab); temp = expand_binop (wider_mode, binoptab, xop0, xop1, NULL_RTX, unsignedp, methods); |