diff mbox series

i386: Force V2SI mode operands to registers in expand_sse_movcc

Message ID CAFULd4ayrSudddEHyRvB-f5mq7P5-HaXsjU=UjFejUg0XicPVQ@mail.gmail.com
State New
Headers show
Series i386: Force V2SI mode operands to registers in expand_sse_movcc | expand

Commit Message

Uros Bizjak May 10, 2021, 2:45 p.m. UTC
For some reason middle-end does not enforce operand
predicates for vcond patterns.

2021-05-10  UroŇ° Bizjak  <ubizjak@gmail.com>

gcc/
    * config/i386/i386-expand.c (ix86_expand_sse_movcc)
    <case E_V2SImode>: Force op_true to register.

Bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.

Pushed to master.

Uros.
diff mbox series

Patch

diff --git a/gcc/config/i386/i386-expand.c b/gcc/config/i386/i386-expand.c
index e9f11bca78a..5cfde5b3d30 100644
--- a/gcc/config/i386/i386-expand.c
+++ b/gcc/config/i386/i386-expand.c
@@ -3707,6 +3707,8 @@  ix86_expand_sse_movcc (rtx dest, rtx cmp, rtx op_true, rtx op_false)
     case E_V2SImode:
       if (TARGET_SSE4_1)
 	{
+	  op_true = force_reg (mode, op_true);
+
 	  gen = gen_mmx_pblendvb;
 	  if (mode != V8QImode)
 	    d = gen_reg_rtx (V8QImode);