author | Shawn Walker-Salas <shawn.walker@oracle.com> |
Thu, 14 Apr 2016 12:48:37 -0700 | |
changeset 5781 | ecbdf40c0a37 |
parent 5331 | 9c955076ffe3 |
permissions | -rw-r--r-- |
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From 8b3f554d869e1d6e7a0bd1574135402cfc6dc1a3 Mon Sep 17 00:00:00 2001 |
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From: Michael Hudson-Doyle <[email protected]> |
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Date: Mon, 5 Oct 2015 16:07:59 +1300 |
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Subject: [PATCH 38/63] [release-branch.go1.5] cmd/compile: do not let regopt |
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use REGTMP on ppc64 |
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ppc64 codegen assumes that it is OK to stomp on r31 at any time, but it is not |
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excluded from the set of registers that regopt is allowed to use. |
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Fixes #12597 |
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Change-Id: I29c7655e32abd22f3c21d88427b73e4fca055233 |
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Reviewed-on: https://go-review.googlesource.com/15245 |
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Reviewed-by: Minux Ma <[email protected]> |
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Reviewed-on: https://go-review.googlesource.com/16981 |
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Run-TryBot: Austin Clements <[email protected]> |
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Reviewed-by: Ian Lance Taylor <[email protected]> |
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Reviewed-by: Russ Cox <[email protected]> |
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--- |
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src/cmd/compile/internal/ppc64/reg.go | 2 +- |
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1 file changed, 1 insertion(+), 1 deletion(-) |
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diff --git a/src/cmd/compile/internal/ppc64/reg.go b/src/cmd/compile/internal/ppc64/reg.go |
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index fa1cb71..a301836 100644 |
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--- a/src/cmd/compile/internal/ppc64/reg.go |
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+++ b/src/cmd/compile/internal/ppc64/reg.go |
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@@ -111,7 +111,7 @@ func regnames(n *int) []string { |
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func excludedregs() uint64 { |
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// Exclude registers with fixed functions |
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- regbits := uint64(1<<0 | RtoB(ppc64.REGSP) | RtoB(ppc64.REGG) | RtoB(ppc64.REGTLS)) |
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+ regbits := uint64(1<<0 | RtoB(ppc64.REGSP) | RtoB(ppc64.REGG) | RtoB(ppc64.REGTLS) | RtoB(ppc64.REGTMP)) |
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// Also exclude floating point registers with fixed constants |
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regbits |= RtoB(ppc64.REG_F27) | RtoB(ppc64.REG_F28) | RtoB(ppc64.REG_F29) | RtoB(ppc64.REG_F30) | RtoB(ppc64.REG_F31) |
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-- |
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2.6.1 |
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