LiveRangeEdit: Fix liveranges not shrinking on subrange kill.

[oota-llvm.git] / test / CodeGen / R600 / subreg-eliminate-dead.ll

diff --git a/test/CodeGen/R600/subreg-eliminate-dead.ll b/test/CodeGen/R600/subreg-eliminate-dead.ll
new file mode 100644 (file)
index 0000000..cd414c7
--- /dev/null
+++ b/test/CodeGen/R600/subreg-eliminate-dead.ll
@@ -0,0 +1,55 @@
+; RUN: llc -verify-machineinstrs -o - %s | FileCheck %s
+; LiveRangeEdit::eliminateDeadDef did not update LiveInterval sub ranges
+; properly.
+target datalayout = "e-p:32:32-p1:64:64-p2:64:64-p3:32:32-p4:64:64-p5:32:32-p24:64:64-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64"
+target triple = "amdgcn--"
+
+; CHECK-LABEL: foobar:
+; Output with subregister liveness disabled:
+; CHECK: v_mov_b32_e32 v1, 1
+; CHECK: v_mov_b32_e32 v0, 0
+; CHECK: v_cmp_eq_i32_e32 vcc, s0, v0
+; CHECK: v_cmp_eq_i32_e64 s[0:1], s0, v1
+; CHECK: v_mov_b32_e32 v1, 3
+; CHECK: v_mov_b32_e32 v0, 2
+; CHECK: v_cmp_eq_i32_e64 s[2:3], s0, v0
+; CHECK: v_cmp_eq_i32_e64 s[4:5], s0, v1
+; CHECK: v_cndmask_b32_e64 v3, 0, -1, s[4:5]
+; CHECK: v_cndmask_b32_e64 v2, 0, -1, s[2:3]
+; CHECK: v_cndmask_b32_e64 v1, 0, -1, s[0:1]
+; CHECK: v_cndmask_b32_e64 v0, 0, -1, vcc
+; CHECK: v_cmp_ne_i32_e32 vcc, 0, v1
+; CHECK: v_cndmask_b32_e64 v1, 0, v0, vcc
+; CHECK: s_mov_b32 s3, 0xf000
+; CHECK: s_mov_b32 s2, -1
+; CHECK: buffer_store_dwordx2 v[0:1], s[0:3], 0
+; CHECK: s_endpgm
+; Output with subregister liveness enabled:
+; XCHECK: v_mov_b32_e32 v1, 1
+; XCHECK: v_mov_b32_e32 v0, 0
+; XCHECK: v_cmp_eq_i32_e32 vcc, s0, v1
+; XCHECK: v_mov_b32_e32 v1, 3
+; XCHECK: v_mov_b32_e32 v0, 2
+; XCHECK: v_cmp_eq_i32_e64 s[0:1], s0, v0
+; XCHECK: v_cmp_eq_i32_e64 s[2:3], s0, v1
+; XCHECK: v_cndmask_b32_e64 v3, 0, -1, s[2:3]
+; XCHECK: v_cndmask_b32_e64 v2, 0, -1, s[0:1]
+; XCHECK: v_cndmask_b32_e64 v1, 0, -1, vcc
+; XCHECK: v_cmp_ne_i32_e32 vcc, 0, v1
+; XCHECK: v_cndmask_b32_e64 v1, 0, v0, vcc
+; XCHECK: s_mov_b32 s3, 0xf000
+; XCHECK: s_mov_b32 s2, -1
+; XCHECK: buffer_store_dwordx2 v[0:1], s[0:3], 0
+; XCHECK: s_endpgm
+define void @foobar() {
+  %v0 = icmp eq <4 x i32> undef, <i32 0, i32 1, i32 2, i32 3>
+  %v3 = sext <4 x i1> %v0 to <4 x i32>
+  %v4 = extractelement <4 x i32> %v3, i32 1
+  %v5 = icmp ne i32 %v4, 0
+  %v6 = select i1 %v5, i32 undef, i32 0
+  %v15 = insertelement <2 x i32> undef, i32 %v6, i32 1
+  store <2 x i32> %v15, <2 x i32> addrspace(1)* undef, align 8
+  ret void
+}
+
+declare double @llvm.fma.f64(double, double, double)