From c8d962c205bc5d6f81f3d083d90ecaf66f78b1e8 Mon Sep 17 00:00:00 2001 From: Ilia Mirkin Date: Wed, 25 Mar 2015 18:00:00 -0400 Subject: nv50/ir: take postFactor into account when doing peephole optimizations Multiply operations can have a post-factor on them, which other ops don't support. Only perform the peephole optimizations when there is no post-factor involved. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89758 Cc: "10.4 10.5" Signed-off-by: Ilia Mirkin (cherry picked from commit 49b86007aa2bb599ada6cdbed7ff56246917f12e) --- src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp index 21d20caffdf..9e2a933daa4 100644 --- a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp +++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp @@ -422,7 +422,9 @@ ConstantFolding::expr(Instruction *i, b->data.f32 = 0.0f; } switch (i->dType) { - case TYPE_F32: res.data.f32 = a->data.f32 * b->data.f32; break; + case TYPE_F32: + res.data.f32 = a->data.f32 * b->data.f32 * exp2f(i->postFactor); + break; case TYPE_F64: res.data.f64 = a->data.f64 * b->data.f64; break; case TYPE_S32: if (i->subOp == NV50_IR_SUBOP_MUL_HIGH) { @@ -550,6 +552,7 @@ ConstantFolding::expr(Instruction *i, i->src(0).mod = Modifier(0); i->src(1).mod = Modifier(0); + i->postFactor = 0; i->setSrc(0, new_ImmediateValue(i->bb->getProgram(), res.data.u32)); i->setSrc(1, NULL); @@ -653,7 +656,7 @@ ConstantFolding::tryCollapseChainedMULs(Instruction *mul2, Instruction *insn; Instruction *mul1 = NULL; // mul1 before mul2 int e = 0; - float f = imm2.reg.data.f32; + float f = imm2.reg.data.f32 * exp2f(mul2->postFactor); ImmediateValue imm1; assert(mul2->op == OP_MUL && mul2->dType == TYPE_F32); @@ -753,9 +756,10 @@ ConstantFolding::opnd(Instruction *i, ImmediateValue &imm0, int s) i->op = OP_MOV; i->setSrc(0, new_ImmediateValue(prog, 0u)); i->src(0).mod = Modifier(0); + i->postFactor = 0; i->setSrc(1, NULL); } else - if (imm0.isInteger(1) || imm0.isInteger(-1)) { + if (!i->postFactor && (imm0.isInteger(1) || imm0.isInteger(-1))) { if (imm0.isNegative()) i->src(t).mod = i->src(t).mod ^ Modifier(NV50_IR_MOD_NEG); i->op = i->src(t).mod.getOp(); @@ -768,7 +772,7 @@ ConstantFolding::opnd(Instruction *i, ImmediateValue &imm0, int s) i->src(0).mod = 0; i->setSrc(1, NULL); } else - if (imm0.isInteger(2) || imm0.isInteger(-2)) { + if (!i->postFactor && (imm0.isInteger(2) || imm0.isInteger(-2))) { if (imm0.isNegative()) i->src(t).mod = i->src(t).mod ^ Modifier(NV50_IR_MOD_NEG); i->op = OP_ADD; -- cgit v1.2.3