arm: optimize smul_dual() and neon_trn_u8() using extract op

Richard Henderson Wed, 10 May 2017 13:21:02 -0700

On 05/10/2017 01:05 PM, Philippe Mathieu-Daudé wrote:

-    tcg_gen_shri_i32(t1, t1, 8);
-    tcg_gen_andi_i32(t1, t1, 0x00ff00ff);
+    tcg_gen_extract_i32(t1, t1, 8, 0x00ff00ff);


This is very wrong.  See my previous comment.


r~

[Qemu-devel] [PATCH 3/8] target/arm: optimize rev1... Philippe Mathieu-Daudé
- Re: [Qemu-devel] [PATCH 3/8] target/arm: opti... Philippe Mathieu-Daudé
[Qemu-devel] [PATCH 7/8] target/ppc: optimize vari... Philippe Mathieu-Daudé
- Re: [Qemu-devel] [PATCH 7/8] target/ppc: opti... David Gibson
- - Re: [Qemu-devel] [Qemu-ppc] [PATCH 7/8] t... Laurent Vivier
- Re: [Qemu-devel] [PATCH 7/8] target/ppc: opti... Nikunj A Dadhania
- - Re: [Qemu-devel] [PATCH 7/8] target/ppc: ... Philippe Mathieu-Daudé
[Qemu-devel] [PATCH 2/8] target/arm: optimize smul... Philippe Mathieu-Daudé
- Re: [Qemu-devel] [PATCH 2/8] target/arm: opti... Eric Blake
- - Re: [Qemu-devel] [PATCH 2/8] target/arm: ... Philippe Mathieu-Daudé
- Re: [Qemu-devel] [PATCH 2/8] target/arm: opti... Richard Henderson
- - Re: [Qemu-devel] [PATCH 2/8] target/arm: ... Philippe Mathieu-Daudé
  - - Re: [Qemu-devel] [PATCH 2/8] target/a... Philippe Mathieu-Daudé
[Qemu-devel] [PATCH 4/8] target/cris: optimize gen... Philippe Mathieu-Daudé
- Re: [Qemu-devel] [PATCH 4/8] target/cris: opt... Philippe Mathieu-Daudé
[Qemu-devel] [PATCH 6/8] target/mips: optimize bsh... Philippe Mathieu-Daudé
- Re: [Qemu-devel] [PATCH 6/8] target/mips: opt... Philippe Mathieu-Daudé
[Qemu-devel] [PATCH 5/8] target/m68k: optimize bcd... Philippe Mathieu-Daudé
- Re: [Qemu-devel] [PATCH 5/8] target/m68k: opt... Laurent Vivier
- - Re: [Qemu-devel] [PATCH 5/8] target/m68k:... Philippe Mathieu-Daudé
[Qemu-devel] [PATCH 8/8] target/sparc: optimize va... Philippe Mathieu-Daudé

Re: [Qemu-devel] [PATCH 2/8] target/arm: optimize smul_dual() and neon_trn_u8() using extract op

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