From 00d6b19abde74e659b0572c9bbee1a1fa75d7e2c Mon Sep 17 00:00:00 2001 From: Aurelien Buhrig Date: Tue, 27 Mar 2012 20:50:16 +0000 Subject: [PATCH] re PR middle-end/51893 (Wrong subword index computation in store_bit_field_1 on BIG_ENDIAN targets) PR middle-end/51893 * expmed.c (store_bit_field_1): Fix wordnum value for big-endian targets. From-SVN: r185897 --- gcc/ChangeLog | 6 ++++++ gcc/expmed.c | 5 ++++- 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index cc4f0cb3a11..a7a766153e7 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2012-03-27 Aurelien Buhrig + + PR middle-end/51893 + * expmed.c (store_bit_field_1): Fix wordnum value for big-endian + targets. + 2012-03-27 Oleg Endo PR target/50751 diff --git a/gcc/expmed.c b/gcc/expmed.c index 54e51dca02d..5eea2ab8b51 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -550,7 +550,10 @@ store_bit_field_1 (rtx str_rtx, unsigned HOST_WIDE_INT bitsize, { /* If I is 0, use the low-order word in both field and target; if I is 1, use the next to lowest word; and so on. */ - unsigned int wordnum = (backwards ? nwords - i - 1 : i); + unsigned int wordnum = (backwards + ? GET_MODE_SIZE (fieldmode) / UNITS_PER_WORD + - i - 1 + : i); unsigned int bit_offset = (backwards ? MAX ((int) bitsize - ((int) i + 1) * BITS_PER_WORD,