Index: lib/Target/R600/AMDGPUInstructions.td
===================================================================
--- lib/Target/R600/AMDGPUInstructions.td
+++ lib/Target/R600/AMDGPUInstructions.td
@@ -252,6 +252,8 @@
 int PI = 0x40490fdb;
 int TWO_PI_INV = 0x3e22f983;
 int FP_UINT_MAX_PLUS_1 = 0x4f800000;    // 1 << 32 in floating point encoding
+int FP32_NEG_ONE = 0xbf800000;
+int FP32_ONE = 0x3f800000;
 }
 def CONST : Constants;
 
Index: lib/Target/R600/SIInstructions.td
===================================================================
--- lib/Target/R600/SIInstructions.td
+++ lib/Target/R600/SIInstructions.td
@@ -2439,6 +2439,27 @@
     (S_MOV_B32 -1), sub1)
 >;
 
+// TODO: Although these return an FP result, we could keep this on SALU.
+def : Pat <
+  (f32 (sint_to_fp i1:$src)),
+  (V_CNDMASK_B32_e64 (i32 0), CONST.FP32_NEG_ONE, $src)
+>;
+
+def : Pat <
+  (f32 (uint_to_fp i1:$src)),
+  (V_CNDMASK_B32_e64 (i32 0), CONST.FP32_ONE, $src)
+>;
+
+def : Pat <
+  (f64 (sint_to_fp i1:$src)),
+    (V_CVT_F64_I32_e32 (V_CNDMASK_B32_e64 (i32 0), (i32 -1), $src))
+>;
+
+def : Pat <
+  (f64 (uint_to_fp i1:$src)),
+  (V_CVT_F64_U32_e32 (V_CNDMASK_B32_e64 (i32 0), (i32 1), $src))
+>;
+
 //===----------------------------------------------------------------------===//
 // Miscellaneous Patterns
 //===----------------------------------------------------------------------===//
Index: test/CodeGen/R600/sint_to_fp.ll
===================================================================
--- test/CodeGen/R600/sint_to_fp.ll
+++ test/CodeGen/R600/sint_to_fp.ll
@@ -29,3 +29,25 @@
   store <4 x float> %result, <4 x float> addrspace(1)* %out
   ret void
 }
+
+; FUNC-LABEL: @sint_to_fp_i1_f32:
+; SI: V_CMP_EQ_I32_e64 [[CMP:s\[[0-9]+:[0-9]\]]],
+; SI-NEXT: V_CNDMASK_B32_e64 [[RESULT:v[0-9]+]], 0, -1.000000e+00, [[CMP]]
+; SI: BUFFER_STORE_DWORD [[RESULT]],
+; SI: S_ENDPGM
+define void @sint_to_fp_i1_f32(float addrspace(1)* %out, i32 %in) {
+  %cmp = icmp eq i32 %in, 0
+  %fp = uitofp i1 %cmp to float
+  store float %fp, float addrspace(1)* %out, align 4
+  ret void
+}
+
+; FUNC-LABEL: @sint_to_fp_i1_f32_load:
+; SI: V_CNDMASK_B32_e64 [[RESULT:v[0-9]+]], 0, -1.000000e+00
+; SI: BUFFER_STORE_DWORD [[RESULT]],
+; SI: S_ENDPGM
+define void @sint_to_fp_i1_f32_load(float addrspace(1)* %out, i1 %in) {
+  %fp = sitofp i1 %in to float
+  store float %fp, float addrspace(1)* %out, align 4
+  ret void
+}
Index: test/CodeGen/R600/sint_to_fp64.ll
===================================================================
--- test/CodeGen/R600/sint_to_fp64.ll
+++ test/CodeGen/R600/sint_to_fp64.ll
@@ -1,9 +1,33 @@
-; RUN: llc < %s -march=r600 -mcpu=SI -verify-machineinstrs | FileCheck %s --check-prefix=CHECK
+; RUN: llc -march=r600 -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI %s
 
-; CHECK: @sint_to_fp64
-; CHECK: V_CVT_F64_I32_e32
+; SI: @sint_to_fp64
+; SI: V_CVT_F64_I32_e32
 define void @sint_to_fp64(double addrspace(1)* %out, i32 %in) {
   %result = sitofp i32 %in to double
   store double %result, double addrspace(1)* %out
   ret void
 }
+
+; SI-LABEL: @sint_to_fp_i1_f64:
+; SI: V_CMP_EQ_I32_e64 [[CMP:s\[[0-9]+:[0-9]\]]],
+; SI-NEXT: V_CNDMASK_B32_e64 [[IRESULT:v[0-9]+]], 0, -1, [[CMP]]
+; SI-NEXT: V_CVT_F64_I32_e32 [[RESULT:v\[[0-9]+:[0-9]\]]], [[IRESULT]]
+; SI: BUFFER_STORE_DWORDX2 [[RESULT]],
+; SI: S_ENDPGM
+define void @sint_to_fp_i1_f64(double addrspace(1)* %out, i32 %in) {
+  %cmp = icmp eq i32 %in, 0
+  %fp = sitofp i1 %cmp to double
+  store double %fp, double addrspace(1)* %out, align 4
+  ret void
+}
+
+; SI-LABEL: @sint_to_fp_i1_f64_load:
+; SI: V_CNDMASK_B32_e64 [[IRESULT:v[0-9]]], 0, -1
+; SI-NEXT: V_CVT_F64_I32_e32 [[RESULT:v\[[0-9]+:[0-9]\]]], [[IRESULT]]
+; SI: BUFFER_STORE_DWORDX2 [[RESULT]]
+; SI: S_ENDPGM
+define void @sint_to_fp_i1_f64_load(double addrspace(1)* %out, i1 %in) {
+  %fp = sitofp i1 %in to double
+  store double %fp, double addrspace(1)* %out, align 8
+  ret void
+}
Index: test/CodeGen/R600/uint_to_fp.f64.ll
===================================================================
--- test/CodeGen/R600/uint_to_fp.f64.ll
+++ test/CodeGen/R600/uint_to_fp.f64.ll
@@ -2,8 +2,33 @@
 
 ; SI-LABEL: @uint_to_fp_f64_i32
 ; SI: V_CVT_F64_U32_e32
+; SI: S_ENDPGM
 define void @uint_to_fp_f64_i32(double addrspace(1)* %out, i32 %in) {
   %cast = uitofp i32 %in to double
   store double %cast, double addrspace(1)* %out, align 8
   ret void
 }
+
+; SI-LABEL: @uint_to_fp_i1_f64:
+; SI: V_CMP_EQ_I32_e64 [[CMP:s\[[0-9]+:[0-9]\]]],
+; SI-NEXT: V_CNDMASK_B32_e64 [[IRESULT:v[0-9]+]], 0, 1, [[CMP]]
+; SI-NEXT: V_CVT_F64_U32_e32 [[RESULT:v\[[0-9]+:[0-9]\]]], [[IRESULT]]
+; SI: BUFFER_STORE_DWORDX2 [[RESULT]],
+; SI: S_ENDPGM
+define void @uint_to_fp_i1_f64(double addrspace(1)* %out, i32 %in) {
+  %cmp = icmp eq i32 %in, 0
+  %fp = uitofp i1 %cmp to double
+  store double %fp, double addrspace(1)* %out, align 4
+  ret void
+}
+
+; SI-LABEL: @uint_to_fp_i1_f64_load:
+; SI: V_CNDMASK_B32_e64 [[IRESULT:v[0-9]]], 0, 1
+; SI-NEXT: V_CVT_F64_U32_e32 [[RESULT:v\[[0-9]+:[0-9]\]]], [[IRESULT]]
+; SI: BUFFER_STORE_DWORDX2 [[RESULT]]
+; SI: S_ENDPGM
+define void @uint_to_fp_i1_f64_load(double addrspace(1)* %out, i1 %in) {
+  %fp = uitofp i1 %in to double
+  store double %fp, double addrspace(1)* %out, align 8
+  ret void
+}
Index: test/CodeGen/R600/uint_to_fp.ll
===================================================================
--- test/CodeGen/R600/uint_to_fp.ll
+++ test/CodeGen/R600/uint_to_fp.ll
@@ -1,28 +1,30 @@
-; RUN: llc < %s -march=r600 -mcpu=redwood | FileCheck %s --check-prefix=R600-CHECK
-; RUN: llc < %s -march=r600 -mcpu=SI -verify-machineinstrs | FileCheck %s --check-prefix=SI-CHECK
+; RUN: llc -march=r600 -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
+; RUN: llc -march=r600 -mcpu=redwood < %s | FileCheck -check-prefix=R600 -check-prefix=FUNC %s
 
-; R600-CHECK-LABEL: @uint_to_fp_v2i32
-; R600-CHECK-DAG: UINT_TO_FLT * T{{[0-9]+\.[XYZW]}}, KC0[2].W
-; R600-CHECK-DAG: UINT_TO_FLT * T{{[0-9]+\.[XYZW]}}, KC0[3].X
-; SI-CHECK-LABEL: @uint_to_fp_v2i32
-; SI-CHECK: V_CVT_F32_U32_e32
-; SI-CHECK: V_CVT_F32_U32_e32
+; FUNC-LABEL: @uint_to_fp_v2i32
+; R600-DAG: UINT_TO_FLT * T{{[0-9]+\.[XYZW]}}, KC0[2].W
+; R600-DAG: UINT_TO_FLT * T{{[0-9]+\.[XYZW]}}, KC0[3].X
+
+; SI: V_CVT_F32_U32_e32
+; SI: V_CVT_F32_U32_e32
+; SI: S_ENDPGM
 define void @uint_to_fp_v2i32(<2 x float> addrspace(1)* %out, <2 x i32> %in) {
   %result = uitofp <2 x i32> %in to <2 x float>
   store <2 x float> %result, <2 x float> addrspace(1)* %out
   ret void
 }
 
-; R600-CHECK-LABEL: @uint_to_fp_v4i32
-; R600-CHECK: UINT_TO_FLT * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
-; R600-CHECK: UINT_TO_FLT * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
-; R600-CHECK: UINT_TO_FLT * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
-; R600-CHECK: UINT_TO_FLT * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
-; SI-CHECK-LABEL: @uint_to_fp_v4i32
-; SI-CHECK: V_CVT_F32_U32_e32
-; SI-CHECK: V_CVT_F32_U32_e32
-; SI-CHECK: V_CVT_F32_U32_e32
-; SI-CHECK: V_CVT_F32_U32_e32
+; FUNC-LABEL: @uint_to_fp_v4i32
+; R600: UINT_TO_FLT * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
+; R600: UINT_TO_FLT * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
+; R600: UINT_TO_FLT * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
+; R600: UINT_TO_FLT * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
+
+; SI: V_CVT_F32_U32_e32
+; SI: V_CVT_F32_U32_e32
+; SI: V_CVT_F32_U32_e32
+; SI: V_CVT_F32_U32_e32
+; SI: S_ENDPGM
 define void @uint_to_fp_v4i32(<4 x float> addrspace(1)* %out, <4 x i32> addrspace(1)* %in) {
   %value = load <4 x i32> addrspace(1) * %in
   %result = uitofp <4 x i32> %value to <4 x float>
@@ -30,17 +32,39 @@
   ret void
 }
 
-; R600-CHECK-LABEL: @uint_to_fp_i64_f32
-; R600-CHECK: UINT_TO_FLT
-; R600-CHECK: UINT_TO_FLT
-; R600-CHECK: MULADD_IEEE
-; SI-CHECK-LABEL: @uint_to_fp_i64_f32
-; SI-CHECK: V_CVT_F32_U32_e32
-; SI-CHECK: V_CVT_F32_U32_e32
-; SI-CHECK: V_MAD_F32
+; FUNC-LABEL: @uint_to_fp_i64_f32
+; R600: UINT_TO_FLT
+; R600: UINT_TO_FLT
+; R600: MULADD_IEEE
+; SI: V_CVT_F32_U32_e32
+; SI: V_CVT_F32_U32_e32
+; SI: V_MAD_F32
+; SI: S_ENDPGM
 define void @uint_to_fp_i64_f32(float addrspace(1)* %out, i64 %in) {
 entry:
   %0 = uitofp i64 %in to float
   store float %0, float addrspace(1)* %out
   ret void
 }
+
+; FUNC-LABEL: @uint_to_fp_i1_f32:
+; SI: V_CMP_EQ_I32_e64 [[CMP:s\[[0-9]+:[0-9]\]]],
+; SI-NEXT: V_CNDMASK_B32_e64 [[RESULT:v[0-9]+]], 0, 1.000000e+00, [[CMP]]
+; SI: BUFFER_STORE_DWORD [[RESULT]],
+; SI: S_ENDPGM
+define void @uint_to_fp_i1_f32(float addrspace(1)* %out, i32 %in) {
+  %cmp = icmp eq i32 %in, 0
+  %fp = uitofp i1 %cmp to float
+  store float %fp, float addrspace(1)* %out, align 4
+  ret void
+}
+
+; FUNC-LABEL: @uint_to_fp_i1_f32_load:
+; SI: V_CNDMASK_B32_e64 [[RESULT:v[0-9]+]], 0, 1.000000e+00
+; SI: BUFFER_STORE_DWORD [[RESULT]],
+; SI: S_ENDPGM
+define void @uint_to_fp_i1_f32_load(float addrspace(1)* %out, i1 %in) {
+  %fp = uitofp i1 %in to float
+  store float %fp, float addrspace(1)* %out, align 4
+  ret void
+}