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Add a DynRex recipe type for x86, decreasing the number of recipes (#1298)

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This patch adds a third mode for templates: REX inference is requestable
at template instantiation time. This reduces the number of recipes
by removing rex()/nonrex() redundancy for many instructions.
This commit is contained in:
Sean Stangl
2019-12-19 15:49:34 -07:00
committed by GitHub
parent b486289ab8
commit cf9e762f16
13 changed files with 875 additions and 514 deletions
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4
cranelift/filetests/filetests/isa/x86/legalize-br-icmp.clif
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@@ -15,7 +15,7 @@ ebb1:
; sameln: function %br_icmp(i64 [%rdi]) fast {
; nextln: ebb0(v0: i64):
; nextln: [RexOp1pu_id#b8] v1 = iconst.i64 0
; nextln: [RexOp1icscc#8039] v2 = icmp eq v0, v1
; nextln: [DynRexOp1icscc#8039] v2 = icmp eq v0, v1
; nextln: [RexOp1t8jccb#75] brnz v2, ebb1
; nextln: [Op1jmpb#eb] jump ebb1
; nextln:
@@ -37,7 +37,7 @@ ebb1(v2: i64):
; sameln: function %br_icmp_ebb_args(i64 [%rdi]) fast {
; nextln: ebb0(v0: i64):
; nextln: [RexOp1pu_id#b8] v1 = iconst.i64 0
; nextln: [RexOp1icscc#8039] v3 = icmp eq v0, v1
; nextln: [DynRexOp1icscc#8039] v3 = icmp eq v0, v1
; nextln: [RexOp1t8jccb#75] brnz v3, ebb1(v0)
; nextln: [Op1jmpb#eb] jump ebb1(v0)
; nextln: