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| author | Jeremy Faller <jeremy@golang.org> | 2020-09-30 17:57:14 -0400 |
|---|---|---|
| committer | Jeremy Faller <jeremy@golang.org> | 2020-09-30 18:00:58 -0400 |
| commit | 91e4d2d57bc341dd82c98247117114c851380aef (patch) | |
| tree | 15a2d023cdc63543cf8a6e99f8a561c0a0459000 /test/codegen/shift.go | |
| parent | c863e14a6c15e174ac0979ddd7f9530d6a4ec9cc (diff) | |
| parent | 846dce9d05f19a1f53465e62a304dea21b99f910 (diff) | |
| download | go-91e4d2d57bc341dd82c98247117114c851380aef.tar.gz go-91e4d2d57bc341dd82c98247117114c851380aef.zip | |
[dev.link] Merge branch 'master' into dev.link
2 conflicts, that make sense.
src/cmd/internal/obj/objfile.go
src/cmd/link/internal/loader/loader.go
Change-Id: Ib224e2d248cb568fa1e888af79dd908b2f5e05ff
Diffstat (limited to 'test/codegen/shift.go')
| -rw-r--r-- | test/codegen/shift.go | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/test/codegen/shift.go b/test/codegen/shift.go index 5e50ea6bff..abc4b091c9 100644 --- a/test/codegen/shift.go +++ b/test/codegen/shift.go @@ -150,6 +150,64 @@ func lshGuarded64(v int64, s uint) int64 { panic("shift too large") } +func checkUnneededTrunc(tab *[100000]uint32, d uint64, v uint32, h uint16, b byte) (uint32, uint64) { + + // ppc64le:-".*RLWINM",-".*RLDICR",".*CLRLSLDI" + // ppc64:-".*RLWINM",-".*RLDICR",".*CLRLSLDI" + f := tab[byte(v)^b] + // ppc64le:-".*RLWINM",-".*RLDICR",".*CLRLSLDI" + // ppc64:-".*RLWINM",-".*RLDICR",".*CLRLSLDI" + f += tab[byte(v)&b] + // ppc64le:-".*RLWINM",-".*RLDICR",".*CLRLSLDI" + // ppc64:-".*RLWINM",-".*RLDICR",".*CLRLSLDI" + f += tab[byte(v)|b] + // ppc64le:-".*RLWINM",-".*RLDICR",".*CLRLSLDI" + // ppc64:-".*RLWINM",-".*RLDICR",".*CLRLSLDI" + f += tab[uint16(v)&h] + // ppc64le:-".*RLWINM",-".*RLDICR",".*CLRLSLDI" + // ppc64:-".*RLWINM",-".*RLDICR",".*CLRLSLDI" + f += tab[uint16(v)^h] + // ppc64le:-".*RLWINM",-".*RLDICR",".*CLRLSLDI" + // ppc64:-".*RLWINM",-".*RLDICR",".*CLRLSLDI" + f += tab[uint16(v)|h] + // ppc64le:-".*AND",-"RLDICR",".*CLRLSLDI" + // ppc64:-".*AND",-"RLDICR",".*CLRLSLDI" + f += tab[v&0xff] + // ppc64le:-".*AND",".*CLRLSLWI" + // ppc64:-".*AND",".*CLRLSLWI" + f += 2*uint32(uint16(d)) + // ppc64le:-".*AND",-"RLDICR",".*CLRLSLDI" + // ppc64:-".*AND",-"RLDICR",".*CLRLSLDI" + g := 2*uint64(uint32(d)) + return f, g +} + +func checkCombinedShifts(v8 uint8, v16 uint16, v32 uint32, x32 int32, v64 uint64) (uint8, uint16, uint32, uint64, int64) { + + // ppc64le:-"AND","CLRLSLWI" + // ppc64:-"AND","CLRLSLWI" + f := (v8 &0xF) << 2 + // ppc64le:-"AND","CLRLSLWI" + // ppc64:-"AND","CLRLSLWI" + f += byte(v16)<<3 + // ppc64le:-"AND","CLRLSLWI" + // ppc64:-"AND","CLRLSLWI" + g := (v16 & 0xFF) << 3 + // ppc64le:-"AND","CLRLSLWI" + // ppc64:-"AND","CLRLSLWI" + h := (v32 & 0xFFFFF) << 2 + // ppc64le:-"AND","CLRLSLWI" + // ppc64:-"AND","CLRLSLWI" + h += uint32(v64)<<4 + // ppc64le:-"AND","CLRLSLDI" + // ppc64:-"AND","CLRLSLDI" + i := (v64 & 0xFFFFFFFF) << 5 + // ppc64le/power9:-"SLD","EXTSWSLI" + // ppc64/power9:-"SLD","EXTSWSLI" + j := int64(x32+32)*8 + return f, g, h, i, j +} + func checkWidenAfterShift(v int64, u uint64) (int64, uint64) { // ppc64le:-".*MOVW" |