Add negative test for canonicalizing instructions. This test contains the specific instruction that was previously failing to apply the srcmod after eliding the bitmask instruction.

Author: chrisjbris

llvm/test/CodeGen/AMDGPU/integer-canonicalizing-src-modifiers.ll

@@ -0,0 +1,53 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx700 < %s | FileCheck -check-prefixes=GCN,GFX7 %s
+; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 < %s | FileCheck -check-prefixes=GCN,GFX9 %s
+; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx1100 -mattr=+real-true16 < %s | FileCheck -check-prefixes=GFX11,GFX11-TRUE16 %s
+; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx1100 -mattr=-real-true16 < %s | FileCheck -check-prefixes=GFX11,GFX11-FAKE16 %s
+
+; Ensure that the conversion of bitmasks affecting the sign bit on integers to srcmods
+; does not apply to canonicalizing instructions.
+
+define double @v_uitofp_i32_to_f64_abs(i32 %arg0) nounwind {
+; GCN-LABEL: v_uitofp_i32_to_f64_abs:
+; GCN:       ; %bb.0:
+; GCN-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GCN-NEXT:    v_and_b32_e32 v0, 0x7fffffff, v0
+; GCN-NEXT:    v_cvt_f64_u32_e32 v[0:1], v0
+; GCN-NEXT:    s_setpc_b64 s[30:31]
+;
+; GFX11-LABEL: v_uitofp_i32_to_f64_abs:
+; GFX11:       ; %bb.0:
+; GFX11-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GFX11-NEXT:    v_and_b32_e32 v0, 0x7fffffff, v0
+; GFX11-NEXT:    s_delay_alu instid0(VALU_DEP_1)
+; GFX11-NEXT:    v_cvt_f64_u32_e32 v[0:1], v0
+; GFX11-NEXT:    s_setpc_b64 s[30:31]
+  %arg0.abs = and i32 %arg0, u0x7fffffff
+  %cvt = uitofp i32 %arg0.abs to double
+  ret double %cvt
+}
+
+define double @v_uitofp_i32_to_f64_neg(i32 %arg0) nounwind {
+; GCN-LABEL: v_uitofp_i32_to_f64_neg:
+; GCN:       ; %bb.0:
+; GCN-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GCN-NEXT:    v_and_b32_e32 v0, 0x80000000, v0
+; GCN-NEXT:    v_cvt_f64_u32_e32 v[0:1], v0
+; GCN-NEXT:    s_setpc_b64 s[30:31]
+;
+; GFX11-LABEL: v_uitofp_i32_to_f64_neg:
+; GFX11:       ; %bb.0:
+; GFX11-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GFX11-NEXT:    v_and_b32_e32 v0, 0x80000000, v0
+; GFX11-NEXT:    s_delay_alu instid0(VALU_DEP_1)
+; GFX11-NEXT:    v_cvt_f64_u32_e32 v[0:1], v0
+; GFX11-NEXT:    s_setpc_b64 s[30:31]
+  %arg0.neg = and i32 %arg0, u0x80000000
+  %cvt = uitofp i32 %arg0.neg to double
+  ret double %cvt
+}
+;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
+; GFX11-FAKE16: {{.*}}
+; GFX11-TRUE16: {{.*}}
+; GFX7: {{.*}}
+; GFX9: {{.*}}