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99 lines
2.7 KiB
Plaintext
99 lines
2.7 KiB
Plaintext
# RUN: %stinkytofu-opt --arch gfx1250 %s --BuildUseDefChainPass --PeepholeOptimizationPass --print-output
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#
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# MUL+MUL Fusion: v_mul + v_mul with constants → single v_mul with multiplied constant.
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# Converted from PeepholeOptimizationPassTest.*MULMUL*
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#--- F32 basic: 2.0 * 3.0 = 6.0
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# CHECK-LABEL: @mul_mul_f32_basic
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# CHECK: v_mul_f32
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# CHECK-SAME: v2
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# CHECK-SAME: 6
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# CHECK-SAME: v1
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# CHECK-NOT: v_mul_f32
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st.func @mul_mul_f32_basic() {
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^entry:
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v0 = "st.v_mul_f32"(2.0, v1) { issueCycles = 1, latencyCycles = 5 }
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v2 = "st.v_mul_f32"(3.0, v0) { issueCycles = 1, latencyCycles = 5 }
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}
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#--- F32 in-place: 2.0 * 3.0 = 6.0
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# CHECK-LABEL: @mul_mul_f32_inplace
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# CHECK: v_mul_f32
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# CHECK-SAME: v0
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# CHECK-SAME: 6
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# CHECK-SAME: v1
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# CHECK-NOT: v_mul_f32
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st.func @mul_mul_f32_inplace() {
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^entry:
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v0 = "st.v_mul_f32"(2.0, v1) { issueCycles = 1, latencyCycles = 5 }
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v0 = "st.v_mul_f32"(3.0, v0) { issueCycles = 1, latencyCycles = 5 }
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}
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#--- F16 basic: 2.5 * 4.0 = 10.0
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# CHECK-LABEL: @mul_mul_f16_basic
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# CHECK: v_mul_f16
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# CHECK-SAME: v2
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# CHECK-SAME: 10
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# CHECK-SAME: v1
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# CHECK-NOT: v_mul_f16
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st.func @mul_mul_f16_basic() {
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^entry:
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v0 = "st.v_mul_f16"(2.5, v1) { issueCycles = 1, latencyCycles = 5 }
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v2 = "st.v_mul_f16"(4.0, v0) { issueCycles = 1, latencyCycles = 5 }
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}
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#--- Negative: first MUL result has multiple uses → no fusion
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# CHECK-LABEL: @no_fusion_mul_multiple_uses
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# CHECK: v_mul_f32
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# CHECK: v_mul_f32
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# CHECK: v_mul_f32
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st.func @no_fusion_mul_multiple_uses() {
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^entry:
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v0 = "st.v_mul_f32"(2.0, v1) { issueCycles = 1, latencyCycles = 5 }
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v2 = "st.v_mul_f32"(3.0, v0) { issueCycles = 1, latencyCycles = 5 }
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v3 = "st.v_mul_f32"(4.0, v0) { issueCycles = 1, latencyCycles = 5 }
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}
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#--- Negative: second MUL has no constant → no fusion
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# CHECK-LABEL: @no_fusion_mul_missing_const
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# CHECK: v_mul_f32
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# CHECK: v_mul_f32
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st.func @no_fusion_mul_missing_const() {
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^entry:
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v0 = "st.v_mul_f32"(2.0, v1) { issueCycles = 1, latencyCycles = 5 }
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v2 = "st.v_mul_f32"(v3, v0) { issueCycles = 1, latencyCycles = 5 }
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}
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#--- With zero: 5.0 * 0.0 = 0.0
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# CHECK-LABEL: @mul_mul_with_zero
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# CHECK: v_mul_f32
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# CHECK-SAME: v2
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# CHECK-SAME: 0
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# CHECK-SAME: v1
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# CHECK-NOT: v_mul_f32
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st.func @mul_mul_with_zero() {
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^entry:
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v0 = "st.v_mul_f32"(5.0, v1) { issueCycles = 1, latencyCycles = 5 }
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v2 = "st.v_mul_f32"(0.0, v0) { issueCycles = 1, latencyCycles = 5 }
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}
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#--- Negative values: -2.0 * 3.0 = -6.0
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# CHECK-LABEL: @mul_mul_negative
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# CHECK: v_mul_f32
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# CHECK-SAME: v2
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# CHECK-SAME: -6
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# CHECK-SAME: v1
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# CHECK-NOT: v_mul_f32
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st.func @mul_mul_negative() {
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^entry:
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v0 = "st.v_mul_f32"(-2.0, v1) { issueCycles = 1, latencyCycles = 5 }
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v2 = "st.v_mul_f32"(3.0, v0) { issueCycles = 1, latencyCycles = 5 }
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}
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