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[dev.ssa] cmd/compile/internal/ssa: implement OHMUL

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Adds support for high multiply which is used by the frontend when
rewriting const division.  The frontend currently only does this for 8,
16, and 32 bit integer arithmetic.

Change-Id: I9b6c6018f3be827a50ee6c185454ebc79b3094c8
Reviewed-on: https://go-review.googlesource.com/13696
Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Todd Neal 2015-08-18 19:14:47 -05:00
parent a45f2d8f28
commit 67cbd5b51d
10 changed files with 4266 additions and 4 deletions
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3
src/cmd/compile/internal/gc/ssa_test.go
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@ -51,3 +51,6 @@ func TestFP(t *testing.T) { runTest(t, "fp_ssa.go") }
// TestArithmeticBoundary tests boundary results for arithmetic operations.
func TestArithmeticBoundary(t *testing.T) { runTest(t, "arithBoundary_ssa.go") }
// TestArithmeticConst tests results for arithmetic operations against constants.
func TestArithmeticConst(t *testing.T) { runTest(t, "arithConst_ssa.go") }